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Hypothetical method of spacecraft propulsion
The fission sail is a type of spacecraft propulsion proposed by Robert Forward that uses fission fragments to propel a large solar sail-like craft. It
Fission_sail
Type of nuclear propulsion method with an ultra high specific-inpulse
The fission-fragment rocket is a rocket engine design that directly harnesses hot nuclear fission products for thrust, as opposed to using a separate
Fission-fragment_rocket
Type of spacecraft propulsion system
Propulsion Workshop (2001), The Safe Affordable Fission Engine (SAFE) Test Series) NASA (2010), Small Fission Power System Feasibility Study Final Report
Nuclear_electric_rocket
Hypothetical propulsion systems for interstellar travel
travel. The fission sail is a type of spacecraft propulsion proposed by Robert Forward that uses fission fragments to propel a large solar sail-like craft
Theoretical spacecraft propulsion
Theoretical_spacecraft_propulsion
Hypothetical spacecraft propulsion through continuous nuclear explosions for thrust
bomb that would be required to instead create the necessary amount of fission. For Daedalus, this process was to be run within a large electromagnet
Nuclear_pulse_propulsion
Space propulsion method using Sun radiation
Solar sails (also known as lightsails, light sails, and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight
Solar_sail
Proposed nuclear pulse propulsion through antimatter-catalyzed nuclear chain reactions
causing it to split (the fission reaction). The resulting shower of neutrons can cause the surrounding fuel to undergo rapid fission or even nuclear fusion
Antimatter-catalyzed nuclear pulse propulsion
Antimatter-catalyzed_nuclear_pulse_propulsion
Proposed rocket propulsion mechanism
rocket (NTR), thrust is created by heating a fluid by using a nuclear fission reactor. The lower the molecular weight of the exhaust (hydrogen having
Nuclear_salt-water_rocket
Method used to accelerate spacecraft
electrical propulsion. Nuclear propulsion methods include: Fission-fragment rockets Fission sails Fusion rockets Nuclear thermal rockets (NTR) Nuclear pulse
Spacecraft_propulsion
Space exploration using nuclear energy
space probes and on the crewed Apollo missions to the Moon. Small nuclear fission reactors for Earth satellites have also been flown, by the Soviet US-A
Nuclear_power_in_space
Proposed spacecraft propulsion method
most proposals use fusion power, as with conventional Bussard ramjets, fission has also been suggested. The advantages of this system include: Fusion
Bussard_ramjet
Type of electric propulsion
produce 5 N of thrust, or 40 kW/N. This power requirement may be met by fission reactors, but the reactor mass (including heat rejection systems) may prove
Plasma_propulsion_engine
Rocket driven by nuclear fusion power
mass of the reactor. A fusion rocket may produce less radiation than a fission rocket, reducing the shielding mass needed. The simplest way of building
Fusion_rocket
Type of solar sail
A diffractive solar sail, or diffractive lightsail, is a type of solar sail which relies on diffraction instead of reflection for its propulsion. Current
Diffractive_solar_sail
Nuclear spacecraft propulsion technology
Whereas all early applications for nuclear thermal rocket propulsion used fission processes, research in the 2010s has moved to fusion approaches. The Direct
Nuclear_thermal_rocket
Proposed spacecraft propulsion device
An electric sail (also known as an electric solar wind sail or an E-sail) is a proposed form of spacecraft propulsion using the dynamic pressure of the
Electric_sail
Rocket-propelled by exhausted coolant of a gas-cooled nuclear reactor
that is propelled by the exhausted coolant of a gaseous fission reactor. The nuclear fission reactor core may be either a gas or plasma. They may be capable
Gas_core_reactor_rocket
Proposed spacecraft propulsion method
A magnetic sail is a proposed method of spacecraft propulsion where an onboard magnetic field source interacts with a plasma wind (e.g., the solar wind)
Magnetic_sail
Type of rocket engine fuel
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Hypergolic_propellant
Rocket that burns 3 propellants at once or 2 fuels with an oxidizer, sequentially
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Tripropellant_rocket
Form of electrically powered spacecraft propulsion
thrust. Hall effect thruster Ion thruster Magnetohydrodynamics Magnetic sail Pulsed plasma thruster Solar panels on spacecraft Spacecraft propulsion VASIMR
Magnetoplasmadynamic_thruster
Type of spacecraft propulsion using electrical energy to accelerate propellant
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Spacecraft electric propulsion
Spacecraft_electric_propulsion
Type of propulsion for spacecraft
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Pulsed_plasma_thruster
Physical and science fiction concept
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Anti-gravity
Electrothermal thruster in development
extraction thruster Pulsed plasma thruster Project Prometheus Safe Affordable Fission Engine Systems for Nuclear Auxiliary Power TOPAZ nuclear reactor Ad Astra
Variable Specific Impulse Magnetoplasma Rocket
Variable_Specific_Impulse_Magnetoplasma_Rocket
Rocket engine operation method
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Staged_combustion_cycle
Rocket engine that uses photons to propel a spacecraft
the mass of the source of the photons, e.g., atoms undergoing nuclear fission, brings the specific impulse down to 300 km/s (c/1000) or less; considering
Nuclear_photonic_rocket
Type of electric propulsion system
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Hall-effect_thruster
Proposed spacelaunch method
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Mass_driver
Space navigation technique
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Gravity_assist
Load bearing cable connecting objects in space
between multiple space vehicles flying in formation. Electric sail A form of solar wind sail with electrically charged tethers that will be pushed by the
Space_tether
Conceptual rocket engine
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Direct_Fusion_Drive
Launch system that only uses one rocket stage
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Single-stage-to-orbit
Rocket engine operation method
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Expander_cycle
Type of rocket engine
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Cold_gas_thruster
Possible future technology
Dyson sphere Dyson–Harrop satellite Enzmann starship Field propulsion Fission sail Ford-Svaiter mirror Fusion rocket Gas core reactor rocket Gravity tractor
List of hypothetical technologies
List_of_hypothetical_technologies
Rocket with a motor that uses solid propellants
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Solid-propellant_rocket
Propulsion system creating motion without propellant
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Reactionless_drive
Rocket engine that uses liquid fuels and oxidizers
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Liquid-propellant_rocket
Class of liquid rocket propellants
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Nitrous_oxide_fuel_blend
Form of electric spacecraft propulsion
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Ion_thruster
Rocket engine operation method
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Gas-generator_cycle
Space propulsion system
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Gridded_ion_thruster
Type of rocket engine which uses liquid fuel stored at very low temperatures
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Cryogenic_rocket_engine
Space propulsion system, electrostatic gridded ion thruster
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
NASA Solar Technology Application Readiness
NASA_Solar_Technology_Application_Readiness
Liquid form of rocket propellants
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Liquid_rocket_propellant
Mechanism where confined high-speed particles confer energy to a vehicle
"pushing" on the sail. One example is using a solar sail to reflect a laser beam. This concept, called a laser-pushed lightsail or laser sail, was initially
Beam-powered_propulsion
Method of spacecraft propulsion
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Resistojet_rocket
Spacecraft propulsion system by NASA. 50kW Hall-effect thrusters, now for Lunar Gateway
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Advanced Electric Propulsion System
Advanced_Electric_Propulsion_System
Nuclear power to propel a vehicle
interstellar fusion ramjet named after Robert W. Bussard. Fission fragment rocket Fission sail Fusion rocket Gas core reactor rocket Nuclear salt-water
Nuclear_propulsion
Space propulsion system, a gridded electrostatic ion thruster
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
NEXT_(ion_thruster)
Device claimed to be a propellantless spacecraft thruster
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
EmDrive
Type of spacecraft electric propulsion system
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Arcjet_rocket
Spacecraft propulsion technology
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Atmosphere-breathing electric propulsion
Atmosphere-breathing_electric_propulsion
Type of spacecraft plasma propulsion system
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Pulsed_inductive_thruster
Propulsion concepts and technologies
demonstrated in practice, including electrodynamic tethers in orbit, solar sail spacecraft such as IKAROS, and terrestrial applications such as maglev transport
Field_propulsion
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Electrodeless_plasma_thruster
Rocket engine power cycle
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Combustion_tap-off_cycle
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Radioisotope_rocket
Rocket that uses a single propellant with a catalyst
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Monopropellant_rocket
Rocket engine operation method
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Electric-pump-fed_engine
Hypothetical type of spacecraft
lightbulb is a hypothetical type of spacecraft engine using a gaseous fission reactor to achieve nuclear propulsion. Specifically, it would be a type
Nuclear_lightbulb
Type of electric spacecraft propulsion system
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Field-emission electric propulsion
Field-emission_electric_propulsion
Rocket engine operation method
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Pressure-fed_engine
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Vacuum_arc_thruster
Type of nuclear thermal rocket
produce a very high specific impulse amplification – even higher than the fission-fragment rocket, wherein the pulsed rocket the final propellant temperature
Pulsed_nuclear_thermal_rocket
Prototype spacecraft propulsion engine
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Helicon_double-layer_thruster
Type of space propulsion using microwaves
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Microwave electrothermal thruster
Microwave_electrothermal_thruster
Rocket engine that uses both liquid / gaseous and solid fuel
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Hybrid-propellant_rocket
Spacecraft propulsion using steam as propellant
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
World Is Not Enough (spacecraft propulsion)
World_Is_Not_Enough_(spacecraft_propulsion)
Spacecraft propulsion device
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Thrusters_(spacecraft)
Theoretical spacecraft propulsion system
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Solar_thermal_rocket
Non-airbreathing engine used to propel a missile or vehicle
Fission-fragment rocket (nuclear fission energy) Fission products are directly exhausted to give thrust. Theoretical only at this point. Fission sail
Rocket_engine
Hypothetical travel between stars or planetary systems
propulsion systems include nuclear pulse propulsion, fission-fragment rocket, fusion rocket, beamed solar sail, and antimatter rocket. The benefits of interstellar
Interstellar_travel
US spacecraft
CubeSail was a 2018 low-cost spacecraft propulsion demonstration mission using two identical 1.5U CubeSat satellites to deploy a 260 m (850 ft) long, 20 m2
CubeSail_(UltraSail)
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
High Power Electric Propulsion
High_Power_Electric_Propulsion
Monopropellant
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Cavea-B
source and a set of electromagnets to produce a mini-magnetosphere magnetic sail. The gas propellant is ejected into the plasma beam being directed at the
MagBeam
magnetic field to capture energy from the solar wind. The field acts as a sail, using the captured energy to propel the spacecraft analogously to how the
Plasma_magnet
Ion thruster subtype
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Colloid_thruster
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
List of spacecraft with electric propulsion
List_of_spacecraft_with_electric_propulsion
Plasma Physics Experiment
Pulsed nuclear thermal rocket Fusion rocket Bussard ramjet Fission-fragment rocket Fission sail External power Beam-powered propulsion Laser propulsion Tethers
Star_Thrust_Experiment
Space probe that can travel out of the Solar System
solar sail. TAU mission (1987) TAU mission (Thousand Astronomical Units) was a proposed nuclear electric rocket craft that used a 1 MW fission reactor
Interstellar_probe
Electricity generation by nuclear fusion
fission fuel in a blanket of nuclear waste, a concept known as a fission-fusion hybrid. In these systems, the power output is enhanced by the fission
Fusion_power
1946 nuclear weapon tests at Bikini Atoll
were fission events. A plutonium fission event produces, on average, 2.9 neutrons, most of which are consumed in the production of more fission, until
Operation_Crossroads
Rockets using antimatter as their power source
that it cannot efficiently drive nuclear capsules. Antiproton-induced fission and self-generated magnetic fields may greatly enhance energy localization
Antimatter propulsion spacecraft
Antimatter_propulsion_spacecraft
Discontinued US research program on the viability of nuclear pulse propulsion
1955, Ulam co-authored a classified paper proposing the use of nuclear fission bombs, "ejected and detonated at a considerable distance", for propelling
Project Orion (nuclear propulsion)
Project_Orion_(nuclear_propulsion)
Series of British nuclear weapons tests
at Aldermaston produced three designs: Orange Herald, a large boosted fission weapon; Green Bamboo, an interim thermonuclear design; and Green Granite
Operation_Grapple
Crewed or uncrewed travel between stars or planets
energetically more favorable than fission, which releases only about 0.1% of the fuel's mass-energy. However, either fission or fusion technologies can in
Interplanetary_spaceflight
1939 letter to U.S. president Franklin D. Roosevelt
of nuclear fission in uranium in the January 6, 1939, issue of Die Naturwissenschaften, and Lise Meitner identified it as nuclear fission in the February
Einstein–Szilard_letter
bombs. 1986 – 100 to 200 fission bombs and a number of fusion bombs; Vanunu leaks Dimona facility secrets, at US's level in fission and boosted weapons as
Israel_and_nuclear_weapons
stable nuclides. Many of these in theory could decay through spontaneous fission, alpha decay, double beta decay, etc. with a very long half-life, but this
List_of_nuclides
Ballistic missile submarine
system, but the reactor temperature rose uncontrollably. Decay heat from fission products produced during normal operation eventually heated the reactor
Soviet_submarine_K-19
Polish mathematician and physicist (1909–1984)
based on nuclear fusion, rather than toward development of a practical fission bomb. After extensive discussion, the participants reached a consensus
Stanisław_Ulam
Segre, Emilio — Spontaneous Fission p.13 "From this we deduce a spontaneous fission decay constant of 2.1 × 103 fissions per gram per second". published
Timeline of historic inventions
Timeline_of_historic_inventions
Use of nuclear explosives for non-military purposes
that did not exist in nature before 1945. (Fission products were produced in the natural nuclear fission reactor at Oklo about 1.7 billion years ago
Peaceful_nuclear_explosion
American naval officer (1901–1953)
responsibility for the implosion-type fission weapon, but retained that for the design and development of the gun-type fission weapon, which eventually became
William_Sterling_Parsons
1945 attacks in Japan during WWII
two types of atomic bombs: "Little Boy", an enriched uranium gun-type fission weapon, and "Fat Man", a plutonium implosion-type nuclear weapon. The 509th
Atomic bombings of Hiroshima and Nagasaki
Atomic_bombings_of_Hiroshima_and_Nagasaki
Marriage between those with common grandparents or other recent ancestors
preferential parallel cousin marriage as leading to social fission, in the sense that "feud and fission are not at all dysfunctional factors but are necessary
Cousin_marriage
atomic bombs were developed during the war. A relatively simple gun-type fission weapon was made using uranium-235, an isotope that makes up only 0.7 percent
Timeline of the Manhattan Project
Timeline_of_the_Manhattan_Project
FISSION SAIL
FISSION SAIL
Boy/Male
Greek
Father of Plutus.
Boy/Male
Indian
Fashion
Boy/Male
Indian
Passion
Boy/Male
Anglo Saxon
Guide.
Girl/Female
Indian
Passion
Girl/Female
Tamil
Passion
Surname or Lastname
English
English : patronymic from Fill.
Boy/Male
Hindu
Miracle and a more pronounceable form of nissan
Boy/Male
Hindu
Passion
Girl/Female
Arabic, Muslim
Passion
Biblical
mission; sending
Boy/Male
Hindu, Indian
Miracle
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Passion
Girl/Female
Biblical
Hardness, soreness.
Surname or Lastname
English
English : variant of Sessions.
Biblical
Hardness; soreness
Boy/Male
Muslim
Passion
Boy/Male
Tamil
Passion
Surname or Lastname
English
English : metronymic from the medieval female personal name Siss, Ciss, short for Sisley, Cecilie (see Sisley), or possibly from a pet form of Sisley (with the old French diminutive suffix -on).English : variant of Sessions.
Boy/Male
Gujarati, Hindu, Indian, Jain, Kannada, Telugu
Target; Mission; Aim
FISSION SAIL
FISSION SAIL
Boy/Male
American, Australian, British, English, German, Jamaican, Scottish, Teutonic
From Ram's Island; Wild Garlic Island
Boy/Male
American, Australian, British, English, French, Teutonic
Keeper of the Garden; Gardener; Surname
Boy/Male
Indian, Sanskrit
Ultimate Bliss
Boy/Male
British, English
Son of William
Boy/Male
German
Man
Girl/Female
Tamil
Ayanna | அயாநà¯à®¨à®¾
Innocent
Boy/Male
British, English
From the Northern Cliff
Boy/Male
Indian
To increase in power
Girl/Female
Indian
Doe eyed
Girl/Female
American, Australian, Chinese, French, Latin, Spanish
A Name of a Tribe in Africa; Flower; Palm Tree
FISSION SAIL
FISSION SAIL
FISSION SAIL
FISSION SAIL
FISSION SAIL
v. i.
To suffer pain or sorrow; to experience a passion; to be extremely agitated.
n.
The act of sending or throwing out; the act of sending forth or putting into circulation; issue; as, the emission of light from the sun; the emission of heat from a fire; the emission of bank notes.
v. t.
The act or operation of melting or rendering fluid by heat; the act of melting together; as, the fusion of metals.
a.
Behaving like a fashion-monger.
v. t.
The state of being melted or dissolved by heat; a state of fluidity or flowing in consequence of heat; as, metals in fusion.
n.
That which is sent out, issued, or put in circulation at one time; issue; as, the emission was mostly blood.
n.
Reproduction by fission.
n.
A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation.
n.
Hence, also, the time, period, or term during which a court, council, legislature, etc., meets daily for business; or, the space of time between the first meeting and the prorogation or adjournment; thus, a session of Parliaments is opened with a speech from the throne, and closed by prorogation. The session of a judicial court is called a term.
a.
Reproducing by spontaneous fission. See Fission.
n.
A method of asexual reproduction among the lowest (unicellular) organisms by means of a process of self-division, consisting of gradual division or cleavage of the into two parts, each of which then becomes a separate and independent organisms; as when a cell in an animal or plant, or its germ, undergoes a spontaneous division, and the parts again subdivide. See Segmentation, and Cell division, under Division.
n.
Polite, fashionable, or genteel life; social position; good breeding; as, men of fashion.
n.
The make or form of anything; the style, shape, appearance, or mode of structure; pattern, model; as, the fashion of the ark, of a coat, of a house, of an altar, etc.; workmanship; execution.
n.
Reproduction by fission.
n.
Passion week. See Passion week, below.
v. t.
To see in a vision; to dream.
v. t.
To send on a mission.
n.
The act of feigning, inventing, or imagining; as, by a mere fiction of the mind.
n.
A cleaving, splitting, or breaking up into parts.
n.
The state of the mind when it is powerfully acted upon and influenced by something external to itself; the state of any particular faculty which, under such conditions, becomes extremely sensitive or uncontrollably excited; any emotion or sentiment (specifically, love or anger) in a state of abnormal or controlling activity; an extreme or inordinate desire; also, the capacity or susceptibility of being so affected; as, to be in a passion; the passions of love, hate, jealously, wrath, ambition, avarice, fear, etc.; a passion for war, or for drink; an orator should have passion as well as rhetorical skill.