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Electronic amplifier that varies its gain depending on a control voltage
A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated
Variable-gain_amplifier
Type of electronic amplifier
A negative-feedback amplifier (or feedback amplifier) is an electronic amplifier that subtracts a fraction of its output from its input, so that negative
Negative-feedback_amplifier
American semiconductor manufacturer
logarithmic amplifiers; PLL and DDS synthesizers; RF prescalers; variable gain amplifiers; ADC drivers, gain blocks, LNAs and other RF amplifiers. Processors
Analog_Devices
Type of electronic circuit
considered a voltage-controlled amplifier or variable-gain amplifier. Applications are for electronic volume control and automatic gain control (AGC). Although
Analog_multiplier
Electrical circuit
voltage-controlled oscillators (e.g. variable frequency oscillators), voltage-controlled resistors, and voltage-controlled variable gain amplifiers. In the ideal OTA, the
Operational transconductance amplifier
Operational_transconductance_amplifier
Topics referred to by the same term
& Arpels Video Content Analysis Voltage-controlled amplifier also called variable-gain amplifier Victoria College of Art, a Canadian art school Victorian
VCA
Electronic signal processing device
delayed and the other low pass filtered, inverted and then used in a variable-gain amplifier to amplify the original signal to the desired height. Practically
Constant fraction discriminator
Constant_fraction_discriminator
Type of electronic frequency mixer
resulting in a "cleaner" output. Gilbert cells can also be used as variable-gain amplifiers (VGA). It is a generalized case of an early circuit first used
Gilbert_cell
Classification of power amplifier
power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier's efficiency
Power_amplifier_classes
Audio signal processing operation
The signal entering a compressor is split; one copy is sent to a variable-gain amplifier and the other to a side-chain where the signal level is measured
Dynamic_range_compression
satisfy certain requirements. The operational amplifier must have large open-loop signal gain (voltage gain of 200,000 is obtained in early integrated circuit
Operational amplifier applications
Operational_amplifier_applications
Type of variable active electronic filter
state variable filters. In their paper Kerwin, Huelsman and Newcomb derive a filter architecture and provide a realisation with Operational Amplifiers, using
State_variable_filter
Electronic device/component that increases the strength of a signal
amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input. An amplifier is defined as a circuit
Amplifier
Electronic amplitude-limiting device
shearing them; a hard limiter, a type of variable-gain audio level compression, in which the gain of an amplifier is changed very quickly to prevent the
Limiter
wooden case and weighed 23 kilograms. It has full polyphony with a variable-gain amplifier for each key and a BBD (bucket-brigade device) ensemble effect
Logan_String_Melody
Voice encryption, transformation, and synthesis device
for hiss, 10 bands of resonator filters, each controlled by a variable-gain amplifier as a vocal tract, and the manual controllers including a set of
Vocoder
Oscillator with frequency controlled by a voltage input
synthesizer Numerically-controlled oscillator (NCO) Variable-frequency oscillator (VFO) Variable-gain amplifier Voltage-controlled filter (VCF) Godse, Atul P
Voltage-controlled_oscillator
Process where information about current status is used to influence future status
negative feedback in electronic amplifiers. According to Black: Positive feed-back increases the gain of the amplifier, negative feed-back reduces it.
Feedback
Topics referred to by the same term
video game awards show. Variable-gain amplifier, a type of amplifier that varies gain based on some control voltage Variable gauge axle, a multiple gauge
VGA_(disambiguation)
asymptotic gain model (also known as the Rosenstark method) is a representation of the gain of negative feedback amplifiers given by the asymptotic gain relation:
Asymptotic_gain_model
and a variable-gain amplifier which could increase the replay volume by up to 10dB. Both the loudspeaker switching and the gain of the variable-gain amplifier
Vitasound
Audio amplifier based on switching
MOSFETs) operate as electronic switches, and not as linear gain devices as in other amplifiers. They operate by rapidly switching back and forth between
Class-D_amplifier
Control loop feedback mechanism
pneumatic controller by combining the nozzle and flapper high-gain pneumatic amplifier, which had been invented in 1914, with negative feedback from the
PID_controller
Flow graph invented by Claude Shannon
representation of signal flow in various electronic networks and amplifiers, digital filters, state-variable filters and some other types of analog filters. In nearly
Signal-flow_graph
Laser light source
An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification
Optical_parametric_amplifier
Control concept
negative feedback amplifier. The feedback sets the overall (closed-loop) amplifier gain at a value: O I = A 1 + β A ≈ 1 β , {\displaystyle {\frac {O}{I}}={\frac
Negative_feedback
Topics referred to by the same term
DVGA may refer to: Digital Variable Gain Amplifier Double-size VGA display resolution This disambiguation page lists articles associated with the title
DVGA
Harmonic oscillator whose parameters oscillate in time
parametric amplifier: because it used a variable reactance instead of a resistance for amplification it had inherently low noise. A parametric amplifier used
Parametric_oscillator
Electromagnetic device
magnetic amplifier (colloquially known as a "mag amp") is an electromagnetic device for amplifying electrical signals. The magnetic amplifier was invented
Magnetic_amplifier
Electronic amplifier circuit type
a common-drain amplifier, also known as a source follower, is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically
Common_drain
Technical specifications and detailed information on the valve audio amplifier
Technical specifications and detailed information on the valve audio amplifier, including its development history. Vacuum tube characteristics (also called
Valve audio amplifier technical specification
Valve_audio_amplifier_technical_specification
Electronic amplifier for musical instruments
which used a series of variable gain stages that "cascaded" into each other to create more distortion than any previous amplifier could. In doing so, Smith
Guitar_amplifier
Circuit that makes capacitor act like a larger capacitor
class-A amplifiers. Here the capacitance of capacitor C 1 {\displaystyle C_{1}} is multiplied by approximately the transistor's current gain (β). Without
Capacitance_multiplier
Semiconductor manufacturing process
(PLL) frequency synthesizers, prescalers, mixers/upconverters, and variable-gain amplifiers. These RFICs are designed for commercial RF applications such as
Silicon_on_sapphire
Time behavior of a system controlled by Heaviside step functions
A_{0}}}}}.} The time dependence of the amplifier is easy to discover by switching variables to s = jω, whereupon the gain becomes: A F B = A 0 τ 1 τ 2 ⋅ 1 s
Step_response
Electric circuit that generates sine waves
also be viewed as a positive gain amplifier combined with a bandpass filter that provides positive feedback. Automatic gain control, intentional non-linearity
Wien_bridge_oscillator
Linear oscillator circuit using an RC network
create sustained oscillations. As long as the gain of the amplifier is high enough that the total gain around the loop is unity or higher, the circuit
RC_oscillator
Characteristic quality of sounds from vacuum tube amplifiers
concentrates on improving performance of objectively measurable variables. Instrument amplifier design largely concentrates on subjective issues, such as pleasantness
Tube_sound
Analog multiplexing technique used in early telephone systems
negative-feedback repeaters. The K2 system used embedded pilot tones and variable-gain amplifiers employing thermistors and heaters as control elements. Both positive
Carrier_telephony
Electronic amplifier circuit type
In electronics, a common-gate amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a current
Common_gate
Live sound mixing device
whether masking of low-level signals is occurring. Electronic mixer Variable-gain amplifier Allan Soifer (May 2003). "Automatic Mic Mixers". Sound & Video
Automixer
1940 animated film by Walt Disney
a control track with amplitude and frequency tones that drove variable-gain amplifiers to control the volume of the three audio tracks. In addition were
Fantasia_(1940_film)
Experiment on the Juno spacecraft to study radio and plasma waves
(Low)) High Frequency Waveform Receiver Baseband receiver includes: variable-gain amplifier 100 Hz to 3 MHz band-pass filter 12-bit analog-to-digital converter
Waves_(Juno)
Analog circuit which filters an electronic signal using an amplifier
typically an amplifier. Amplifiers included in a filter design can be used to improve the cost, performance and predictability of a filter. An amplifier prevents
Active_filter
Audio oscillator made by Hewlett-Packard
ratio. The loop gain is a product of the very high amplifier gain and the very low bridge ratio. In Hewlett's circuit, the amplifier is implemented by
HP_200A
Guitar amplifier
The Fender Twin and Twin Reverb are guitar amplifiers made by Fender Musical Instruments Corporation. The Twin was introduced in 1952, two years before
Fender_Twin
Discrete device in an electronic system
charge through current: Inductor, coil, choke Variable inductor Saturable inductor Transformer Magnetic amplifier (toroid) ferrite impedances, beads Motor
Electronic_component
A direct-coupled amplifier or DC amplifier is a type of amplifier in which the output of one stage of the amplifier is coupled to the input of the next
Direct-coupled_amplifier
distinguish them. The RF amplifier stages of radio receivers require variable tuning to select the station, usually achieved by using variable capacitors in the
Tuned_amplifier
Electrode used to control electron flow within a vacuum tube
helix with a variable pitch. This gives the resultant valve a distinct non-linear characteristic. This is often exploited in R.F. amplifiers where an alteration
Control_grid
Type of electronic component
opposite of an amplifier, though the two work by different methods. While an amplifier provides gain, an attenuator provides loss, or gain less than unity
Attenuator_(electronics)
Type of valve amplifier
A valve audio amplifier (UK) or vacuum tube audio amplifier (US) is a valve amplifier used for sound reinforcement, sound recording and reproduction.
Valve_audio_amplifier
Classical method used to design feedback control systems
feeding that voltage back to the inverting input of the drive amplifier, the amplifier becomes a voltage controlled current source. With constant current
Minor_loop_feedback
Electromechanical device
motors or stepper motors in actuators Class D electronic amplifiers Switched capacitor filters Variable-frequency drives D.C. voltage boosting Battery-operated
Chopper_(electronics)
were built during that time. The single-channel version of the amplifier employed modest gain in the preamp stages, Baxandall type bass and treble controls
Jim_Kelley_Amplifiers
LC oscillator design
oscillators, consists of a gain device (such as a bipolar junction transistor, field-effect transistor, operational amplifier, or vacuum tube) with its
Colpitts_oscillator
Logic gate implementing negation
digital logic gate may be used as a high-gain analog linear amplifier or even combined to form an opamp. Maximum gain is achieved when the input and output
Inverter_(logic_gate)
Property that an increasing voltage results in a decreasing current
characteristic of all NR amplifiers, contrasting with the behavior of two-port amplifiers, which generally have limited gain but are often unconditionally
Negative_resistance
American radio receiver manufacturer (1921–1956)
arranged as a tuned RF amplifier, a regenerative detector, and a final audio amplifier. A tuned antenna circuit consisting of a variable capacitor and tapped
Crosley_Radio_(1921–1956)
Microwave signal amplifier
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used
Traveling-wave_tube
signals may pass through one or more analog notch filters and a variable-gain amplifier (VCA) Multiple analog-to-digital converters convert the analog
Ultrasound_research_interface
Electronic filter circuits defined by component connection
with the option of high Q and passband gain. Prototype filter Topology (electronics) Linear filter State variable filter Zobel, 1923 There is no universally-recognised
Electronic_filter_topology
Electronic circuit
typical conditions, the Clapp oscillator's loop gain varies as f −3, so wide ranges will overdrive the amplifier. For VFOs, Vackář recommends other circuits
Clapp_oscillator
Type of electronic circuit
the amplifier will act as a pure gain A {\displaystyle A} , but if the oscillation frequency ω 0 {\displaystyle \omega _{0}} is near the amplifier's cutoff
Electronic_oscillator
American audio equipment manufacturer
headroom and gain on the Rhythm channel, is the old equivalent to the new 6505+.[citation needed] In 2010, Peavey released a new amplifier for the 6505
Peavey_Electronics
Circuit component performing mathematical integration
wave-shaping use is as a charge amplifier and they are usually constructed using an operational amplifier though they can use high gain discrete transistor configurations
Op_amp_integrator
Electronic oscillator
common-gate or common-base) amplifier stage, which is still non-inverting but provides voltage gain instead of current gain; the coil tapping is still
Hartley_oscillator
Electrical engineer, academic, and author
W. M., & Meyer, R. G. (1973). Distortion in bipolar transistor variable-gain amplifiers. IEEE Journal of Solid-State Circuits, 8(4), 275–282. Sansen, W
Willy_Sansen
Laser pulsing technique
some type of variable attenuator inside the laser's optical resonator. When the attenuator is functioning, light which leaves the gain medium does not
Q-switching
A vacuum variable capacitor is a variable capacitor which uses a high vacuum as the dielectric instead of air or other insulating material. This allows
Vacuum_variable_capacitor
Method in electronic engineering
input-node variable yout = output-node variable G = complete gain between yin and yout N = total number of forward paths between yin and yout Gk = path gain of
Mason's_gain_formula
Electronic component
programmable-gain amplifiers, phased arrays, phase-locked loops, phase-controlled dimming circuits, phase-delay and -advance circuits, tunable filters, variable attenuators
Voltage-controlled_resistor
Loop that increases an initial effect
that the amplifier gain at that frequency is very low (usually by low-pass filtering). If the loop gain (the product of the amplifier gain and the extent
Positive_feedback
Approach to controller design that explicitly deals with uncertainty
systematic design methodology. The idea of high-gain feedback as a means to regulate amplifier transmission gain was already at the heart of Harold Black's
Robust_control
achieved by many common receivers. Gain is provided by one or more amplifier stages in a receiver design; some of the gain is applied at the radio-frequency
Radio_receiver_design
NASA satellite of the Explorer program
DC-mode measurements had a two-step, variable-gain amplifier controlled from the ground. The resolution in the highest gain state was 0.5E-6 V/m. The AC measurement
ISEE-1
Method of measuring biological cell currents
are connected to an amplifier, which measures membrane potential and feeds the signal into a feedback amplifier. This amplifier also gets an input from
Voltage_clamp
First successful type of transistor, developed in 1947
common emitter amplifier configuration will display negative output resistance, which may be undesirable for voltage/current amplifier applications. Switching
Point-contact_transistor
Methods to improve tape performance by adjusting input bias
the latter were replaced with variable-gain amplifiers, for example, built around the LM13700 transconductance amplifier). Sukhov 1987, p. 40, fig. 1-2
Adaptive_biasing
Vacuum tube used in transmitters
include Platinotron or Stabilotron. A CFA has lower gain and bandwidth than other microwave amplifier tubes (such as klystrons or traveling-wave tubes);
Crossed-field_amplifier
Transistor amplifier
The Blackmer gain cell is an audio frequency voltage-controlled amplifier (VCA) circuit with an exponential control law. It was invented and patented by
Blackmer_gain_cell
Type of electronic audio manipulation
music. The first guitar amplifiers were relatively low-fidelity, and would often produce distortion when their volume (gain) was increased beyond their
Distortion_(music)
Audio compressor
vacuum tubes to solid-state technology. The limiter featured Class A amplifiers, input and output transformers, fast attack and release times, and different
1176_Peak_Limiter
Type of radio receiver
radio-frequency amplifiers by canceling unwanted feedback, allowing more gain per tube. Superregenerative receivers, which achieve very high gain, were developed
Superheterodyne_receiver
20 September 2013. Lenk, John (28 June 1996). Simplified Design of IC Amplifiers. Newnes. p. 152. ISBN 9780080517186. Retrieved 19 September 2013. "LM10"
List of LM-series integrated circuits
List_of_LM-series_integrated_circuits
Computation machine that uses continuously varying data technology
amplifiers ("op amps"), named because they perform mathematical operations. Op amps are a particular type of feedback amplifier with very high gain and
Analog_computer
Guitar and bass amplifier line
The Boss Katana is a line of modeling amplifiers for electric guitar and bass introduced by Japanese manufacturer Boss in 2016. While Boss—an effects pedal
Boss_Katana
Branch of engineering and mathematics
process variable (PV), and compares it with the reference or set point (SP). The difference between actual and desired value of the process variable, called
Control_theory
DC linear voltage regulator
components are a power FET and a differential amplifier (error amplifier). One input of the differential amplifier monitors the fraction of the output determined
Low-dropout_regulator
Transistor that uses both electrons and holes as charge carriers
current gain of the BJT. It is this gain that allows BJTs to be used as the building blocks of electronic amplifiers. The three main BJT amplifier topologies
Bipolar_junction_transistor
Single-grid amplifying vacuum tube having three active electrodes
guitar amplifiers. Each envelope contains two independent triode sections, permitting multiple voltage-gain stages within a single tube. Guitar amplifier literature
Triode
Electronic device that alters audio
effects are sometimes called gain effects, as distorted guitar sounds were first achieved by increasing the gain of tube amplifiers. While distortion effects
Effects_unit
Technique for amplifying ultrashort laser pulses
compressors and stretchers. However, a typical Ti:sapphire-based chirped-pulse amplifier requires that the pulses are stretched to several hundred picoseconds
Chirped_pulse_amplification
Types of electrical transformer
Magnetic amplifier – Electromagnetic device Motor–generator – Device for converting electrical power to another form Saturable reactor – Type of variable reactance
Transformer_types
Instrument for displaying time-varying signals
different purposes, e.g., high-sensitivity amplifiers of relatively narrow bandwidth, differential amplifiers, amplifiers with four or more channels, sampling
Oscilloscope
triode for use as cascode amplifiers, ECC88/6DJ8 with a different heater PCC89 – Dual variable-mu triode for use as cascode amplifiers up to 220 MHz PCC189/7ES8
List of Mullard–Philips vacuum tubes
List_of_Mullard–Philips_vacuum_tubes
Properties of mathematical relationships
fidelity audio amplifier, which must amplify a signal without changing its waveform. Others are linear filters, and linear amplifiers in general. In most
Linearity
Audio equalizer
of the filter. In addition, it has a separate variable-attenuation 10 kHz low-pass filter. The amplifier stage is balanced and operates in a push‑pull
Pultec_EQP-1
Type of laser
and to completely deplete the inversion in the gain medium. The pulses from chirped-pulse amplifiers are often converted to other wavelengths by means
Titanium-sapphire_laser
American manufacturer of amplifiers
modified Fender amplifiers, particularly the diminutive Fender Princeton. Smith's modifications gave the small amps much more input gain, making them much
Mesa/Boogie
VARIABLE GAIN-AMPLIFIER
VARIABLE GAIN-AMPLIFIER
Boy/Male
Indian, Jain, Sanskrit
Who Gain Moksha; Salvation
Girl/Female
Hindu, Indian, Jain
Forest; Rain
Male
English
Variant spelling of English Gare, GAIR means "spear."
Surname or Lastname
French
French : habitational name from any of various places in France, deriving their names mostly from Old French fain ‘swamp’, but Latin fanum ‘temple’ is also a source in some cases.English : variant spelling of Fayne.
Boy/Male
British, English, German
Gain
Surname or Lastname
English
English : from the feminine personal name Mirabel, equated in medieval records with Latin mirabilis ‘marvellous’, ‘wonderful’ (in the sense ‘extraordinary’).
Boy/Male
Anglo, British, English
Variable
Male
Scottish
Variant spelling of Scottish Gaelic Ian, IAIN means "God is gracious."
Surname or Lastname
English
English : nickname from Middle English digne, deyne ‘worthy’, ‘honorable’, or alternatively, as Reaney suggests, from Middle English dain(e) ‘haughty’, ‘reserved’ (Burgundian French doigne).English : variant of Dean.English : variant of Dane.French : nickname from Old French dain ‘agile’, ‘nimble’.Jewish : variant of Dayan.
Surname or Lastname
English
English : variant of Gaines.
Female
English
Modern English name, either derived from from the vocabulary word, or a revival of the medieval English personal name Rayne, RAIN means "queen." Compare with masculine Rain.
Girl/Female
Hindu, Indian, Sanskrit, Telugu
Rain; Grain
Female
Greek
(Γα�α) Greek name GAIA means "earth." In mythology, this is the name of the goddess of earth, the wife of Ouranos and mother of the Titans. Her Roman name is Terra.
Surname or Lastname
English
English : habitational name from any of various places named with Middle English heghen, a weak plural of hegh, from Old English (ge)hæg ‘enclosure’. See also Haynes.English : from the Middle English personal name Hain, Heyne. This is derived from the Germanic personal name Hagano, originally a byname meaning ‘hawthorn’. It is found in England before the Conquest, but was popularized by the Normans. In the Danelaw, it may be derived from Old Norse Hagni, Hǫgni (see Hagan), a Scandinavianized version of the same name.English : nickname for a wretched individual, from Middle English hain(e), heyne ‘wretch’, ‘niggard’.German : topographic name for someone who lived by a patch of enclosed pastureland, Middle High German hage(n) (see Hagen 1), hain, or a habitational name from a place named Hain, from this word.German : from the Germanic personal name Hagin, originally a byname from the same element as in 2 above.Jewish (eastern Ashkenazic) : metronymic from the Yiddish personal name Khaye ‘life’ + the Slavic possessive suffix -in.
Surname or Lastname
English
English : variant spelling of Gale.French : nickname from Old French gail ‘cheerful’, ‘jolly’.German : variant of Geil.
Female
English
Short form of English Abigail, GAIL means "father rejoices."
Surname or Lastname
English
English : variant of Gain.
Male
English
Anglicized form of Hebrew Tuwbal Qayin, TUBAL-CAIN means "thou shall be brought of Cain." In the bible, this is the name of a son of Lamech, said to be an instructor of every artificer in brass and iron.
Surname or Lastname
Scottish
Scottish : Anglicized form of Gaelic Mac Iain, patronymic from Iain, one of the Gaelic forms of John. This name is found in many other spellings, including McCain, Kean, and McKean. In some cases it may also be a variant of Coyne.English : variant spelling of Cane.English (of Norman origin) : habitational name from Caen in Calvados, France, named with the Gaulish elements catu ‘battle’ + magos ‘field’, ‘plain’.French (Caïn) : from the Biblical name Cain (Hebrew Qayin), probably applied as a derogatory nickname for someone who was considered to be treacherous.Spanish (CaÃn) : habitational name from a place called CaÃn in León.
Male
English
Variant spelling of English Gale, GAIL means "calm, tranquil."
VARIABLE GAIN-AMPLIFIER
VARIABLE GAIN-AMPLIFIER
Boy/Male
Arabic
Happy; Delighted; Content
Boy/Male
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Above
Male
Norse
Old Norse equivalent of Anglo-Saxon Hereweald, HARALDR means "army ruler."
Girl/Female
Tamil
River starting from blue mountain (Neel Parvat)
Girl/Female
Indian
Someone gives shelter
Girl/Female
American, Australian, Chinese, French, Irish
Dark; From Arcy
Girl/Female
Muslim
Beautiful
Boy/Male
Indian, Tamil
Sun
Girl/Female
Australian, Greek
Resurrection
Girl/Female
Arabic, Australian, Chinese, Muslim
Beautiful; Strong
VARIABLE GAIN-AMPLIFIER
VARIABLE GAIN-AMPLIFIER
VARIABLE GAIN-AMPLIFIER
VARIABLE GAIN-AMPLIFIER
VARIABLE GAIN-AMPLIFIER
a.
Friendly; kindly; sweet; gracious; as, an amiable temper or mood; amiable ideas.
n.
To get, as profit or advantage; to obtain or acquire by effort or labor; as, to gain a good living.
v. i.
To have or receive advantage or profit; to acquire gain; to grow rich; to advance in interest, health, or happiness; to make progress; as, the sick man gains daily.
a.
Liable to vary; too susceptible of change; mutable; fickle; unsteady; inconstant; as, the affections of men are variable; passions are variable.
n.
To reach; to attain to; to arrive at; as, to gain the top of a mountain; to gain a good harbor.
a.
Having value or worth; possessing qualities which are useful and esteemed; precious; costly; as, a valuable horse; valuable land; a valuable cargo.
adv.
Once repeated; -- of quantity; as, as large again, half as much again.
n.
A main-hamper.
a.
Arable; tillable.
n.
An invariable quantity; a constant.
n.
To come off winner or victor in; to be successful in; to obtain by competition; as, to gain a battle; to gain a case at law; to gain a prize.
adv.
In a variable manner.
n.
A quantity which may increase or decrease; a quantity which admits of an infinite number of values in the same expression; a variable quantity; as, in the equation x2 - y2 = R2, x and y are variables.
v. t.
To represent by parable.
n.
Arable land; plow land.
v. t.
The obtaining or amassing of profit or valuable possessions; acquisition; accumulation.
a.
Having the capacity of varying or changing; capable of alternation in any manner; changeable; as, variable winds or seasons; a variable quantity.
a.
Worthy; estimable; deserving esteem; as, a valuable friend; a valuable companion.
a.
Invariable.
n.
That which is variable; that which varies, or is subject to change.