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Isotope of uranium
Uranium-238 (238 U or U-238) is the most common isotope of uranium found in nature, with a relative abundance above 99%. Unlike uranium-235, it is non-fissile
Uranium-238
Chemical element with atomic number 92 (U)
natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has
Uranium
Uranium (92U) is a naturally occurring radioactive element (radioelement) with no stable isotopes. It has two primordial isotopes, uranium-238 and uranium-235
Isotopes_of_uranium
Uranium processed to increase the percentage of uranium-235
Naturally occurring uranium is composed primarily of three isotopes: uranium-238 (238U, 99.2732–99.2752% natural abundance), uranium-235 (235U, 0.7198–0
Enriched_uranium
Isotope of uranium
Uranium-234 (234 U or U-234) is an isotope of uranium. In natural uranium and in uranium ore, 234U occurs as an indirect decay product of uranium-238
Uranium-234
Isotope of uranium
Uranium-235 (235 U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile
Uranium-235
Isotope of radium
chain of uranium-238; as such, it can be found naturally in uranium-containing minerals. 226 Ra occurs in the decay chain of uranium-238 (238 U), which
Radium-226
92-proton element with the same mix of isotopes as found in nature, i.e. unenriched
Natural uranium (NU or Unat) is uranium with the same isotopic ratio as found in nature. It contains 0.711% uranium-235, 99.284% uranium-238, and a trace
Natural_uranium
Material capable of sustaining a nuclear fission chain reaction
those (such as uranium-238) for which fission can be induced only by high-energy neutrons. As a result, fissile materials (such as uranium-235) are a subset
Fissile_material
Isotope of polonium
discovery of the element polonium, 210Po is generated in the decay chain of uranium-238 and radium-226. 210Po is a prominent contaminant in the environment,
Polonium-210
Isotope of plutonium
bombarding uranium-238 with deuterons, creating neptunium-238. 238 92U + 2 1H → 238 93Np + 2n The neptunium isotope then undergoes β− decay to plutonium-238 with
Plutonium-238
Series of radioactive decays
three primordial chains given below—thorium, uranium/radium (from uranium-238), and actinium (from uranium-235)—each ends with its own specific lead isotope
Decay_chain
Chemical element with atomic number 94 (Pu)
deuteron bombardment of uranium-238 in the 1.5-metre (60 in) cyclotron at the University of California, Berkeley. First, neptunium-238 (half-life 2.1 days)
Plutonium
Process of extraction of uranium ore from the ground
Uranium mining is the process of extraction of uranium ore from the earth. Almost 50,000 tons of uranium were produced in 2022. Kazakhstan, Canada, and
Uranium_mining
Nuclear reactor generating more fissile material than it consumes
more-commonly available isotopes of uranium and thorium, such as uranium-238 and thorium-232, as opposed to the rare uranium-235 which is used in conventional
Breeder_reactor
Most powerful nuclear weapon ever tested
initiated the fast fission nuclear reaction in the nuclei of the surrounding uranium-238, which would have added another 50 Mt of energy to the explosion, so
Tsar_Bomba
Chemical element with atomic number 84 (Po)
polonium-210 (with a half-life of 138 days) in uranium ores, as it is the penultimate daughter of natural uranium-238. Though two longer-lived isotopes exist
Polonium
Device that performs isotope separation of gases
prominent use of gas centrifuges is for the separation of uranium-235 (235U) from uranium-238 (238U). The gas centrifuge was developed to replace the gaseous
Gas_centrifuge
Isotope of uranium
significant quantity by the nuclear fuel cycle, and the longer-lived uranium-235, uranium-238, and thorium-232 occur in nature.) Unlike plutonium, minor actinides
Uranium-236
Chemical element with atomic number 91 (Pa)
chain of uranium-235. Much smaller trace amounts of the short-lived 234Pa and its nuclear isomer 234mPa occur in the decay chain of uranium-238. 233Pa occurs
Protactinium
Reaction that splits an atomic nucleus
Committee on Uranium. In February 1940, encouraged by Fermi and John R. Dunning, Alfred O. C. Nier was able to separate U-235 and U-238 from uranium tetrachloride
Nuclear_fission
Kinetic energy of an unbound neutron
e. 52,000 km/s, 17.3% of the speed of light) that can easily fission uranium-238 and other non-fissile actinides. Neutron emission occurs in situations
Neutron_temperature
Radiometric dating method
Uranium–thorium dating, also called thorium-230 dating, uranium-series disequilibrium dating or uranium-series dating, is a radiometric dating technique
Uranium–thorium_dating
Most stable isotope of radon
3.82146 days. It is an intermediate in the decay chain of primordial uranium-238 and is the immediate decay product of radium-226. Radon-222 was first
Radon-222
Chemical element with atomic number 88 (Ra)
decay chains of primordial thorium-232, uranium-235, and uranium-238 (223Ra from uranium-235, 226Ra from uranium-238, and the other two from thorium-232)
Radium
Chemical element with atomic number 98 (Cf)
uranium-238 without nuclear fission or alpha decay occurring during the process. 253Cf is at the end of a production chain that starts with uranium-238
Californium
Type of nuclear weapon
Energy from fission of uranium-238 is useful in weapons: both because depleted uranium is much cheaper than highly enriched uranium and because it cannot
Boosted_fission_weapon
manufacturing. Uranium is weakly radioactive and remains so because of its long physical half-life (4.468 billion years for uranium-238). The use of depleted
Uranium_in_the_environment
Uranium with lower content of 235U
natural uranium. The less radioactive and non-fissile 238U is the main component of depleted uranium. It is antonymous to "enriched uranium". Uranium is notable
Depleted_uranium
authorities in the meantime. Uranium appears in nature primarily in two isotopes: uranium-238 and uranium-235. When the nucleus of uranium-235 absorbs a neutron
Nuclear_weapon
Chemical element with atomic number 99 (Es)
neutrons by a uranium-238 nucleus followed by two beta decays. U 92 238 → − 2 β − + 6 ( n , γ ) Pu 94 244 {\displaystyle {\ce {^{238}_{92}U->[{\ce {+6(n
Einsteinium
1953 Soviet atmospheric nuclear test
kilotons, 10% from fission of the uranium-235 core, 15–20% from fusion and 70–75% from fission of the uranium-238 layers. After the successful test Sakharov
RDS-6s
Radiometric dating technique using uranium-234 and uranium-238
Uranium–uranium dating is a radiometric dating technique which compares two isotopes of uranium (U) in a sample: uranium-234 (234U) and uranium-238 (238U)
Uranium–uranium_dating
Canadian heavy water nuclear reactor design
and the primary cooling loop. Natural uranium consists of a mix of mostly uranium-238 with small amounts of uranium-235 and trace amounts of other isotopes
CANDU_reactor
Any of the fifteen lanthanides plus scandium and yttrium
fission of uranium-238. All isotopes of promethium are radioactive. REEs are often found in minerals with thorium, and less commonly uranium. The co-occurrence
Rare-earth_element
Two phonograph records on board Voyager spacecraft
and electroplated upon it is an ultra-pure sample of the isotope uranium-238. Uranium-238 has a half-life of 4.468 billion years. It is possible (e.g., via
Voyager_Golden_Record
Isotope of uranium
which is a tiny fraction of natural thorium present due to the decay of uranium-238: 230Th (n,γ) 231Th (β−) 231Pa (n,γ) 232Pa (β−) 232U The decay chain of
Uranium-232
Nuclear weapon component
neutrons produced by the fission of uranium-235 will exceed this threshold. However, a fast neutron striking a uranium-238 nucleus is eight times as likely
Tamper_(nuclear_weapon)
authorities in the meantime. Uranium appears in nature primarily in two isotopes: uranium-238 and uranium-235. When the nucleus of uranium-235 absorbs a neutron
History_of_nuclear_weapons
Nuclear reactor where fast neutrons maintain a fission chain reaction
fast spectrum is key to breeder reactors, which convert highly abundant uranium-238 into fissile plutonium-239, without requiring enrichment. It also leads
Fast-neutron_reactor
World War II Allied nuclear weapons program
Ames process became available in 1943. Natural uranium consists of 99.3% uranium-238 and 0.7% uranium-235, but as only the latter is fissile it must be
Manhattan_Project
Chinese-American physicist (1912–1997)
Project, where she helped develop the process for separating uranium into uranium-235 and uranium-238 isotopes by gaseous diffusion. She is best known for conducting
Chien-Shiung_Wu
Radioisotope that occurs naturally in trace amounts
the long-lived heavy nuclides, thorium-232, uranium-238, and uranium-235, spontaneous fission of uranium-238, and nuclear transmutation reactions induced
Trace_radioisotope
American nuclear materials company
enriched uranium through gaseous diffusion. In gaseous diffusion, isotopes of Uranium-235 could be separated from Uranium-238 by turning uranium metal into
Kellex_Corporation
Uranium concentrate powder
can produce weapons-grade uranium (typically >90% U-235) for nuclear weapons. Yellowcake consists primarily (>99%) of U-238, which has relatively low
Yellowcake
Conversion of an atom from one element to another
the fissile isotope uranium-233. The radiative capture cross section for thorium-232 is more than three times that of uranium-238, yielding a higher conversion
Nuclear_transmutation
Technique used to date materials such as rocks or carbon
atoms in the beams.[citation needed] Uranium–lead radiometric dating involves using uranium-235 or uranium-238 to date a substance's absolute age. This
Radiometric_dating
Isotope of plutonium
produces two to three neutrons, and these neutrons can be absorbed by uranium-238 (with 99.3% abundance) to produce plutonium-239 and other isotopes. Plutonium-239
Plutonium-239
Radioactive isotope of caesium
weapons. Trace quantities also originate from spontaneous fission of uranium-238. It is among the most problematic of the short-to-medium-lifetime fission
Caesium-137
including notable elements such as uranium and plutonium. The nuclides (or isotopes) thorium-232, uranium-235, and uranium-238 occur primordially, while trace
Actinides_in_the_environment
Austrian-Swedish nuclear physicist (1878–1968)
name. The connection to uranium remained a mystery, as neither of the two known isotopes of uranium (uranium-234 and uranium-238) decayed into protactinium
Lise_Meitner
Thermal power station where the heat source is a nuclear reactor
occurring uranium is found in two different isotopes: uranium-238 (U-238), accounting for 99.3% and uranium-235 (U-235) accounting for about 0.7%. U-238 has
Nuclear_power_plant
Old method of enriching uranium
(enrichment factor 1.0043) between the molecules containing uranium-235 (235U) and uranium-238 (238U). By use of a large cascade of many stages, high separations
Gaseous_diffusion
Atom that has excess nuclear energy, making it unstable
arise in the decay chain of the primordial isotopes thorium-232, uranium-238, and uranium-235 - such as the natural isotopes of polonium and radium - some
Radionuclide
Material fuelling nuclear reactors
driven by neutrons. Uranium-235 is the only naturally-occurring fissile isotope, found mixed with uranium-238 in natural uranium. The only other two fissile
Nuclear_fuel
Nuclear operations in supplying fuel to French nuclear reactors
this spent uranium for recycling. The fertile uranium 238 isotope initially represents 96.7% of the total. During irradiation, uranium 238 is partly transformed
Nuclear_fuel_cycle_in_France
Type of radioactive decay
helium-4 atom, which consists of two protons and two neutrons. For example, uranium-238 undergoes alpha decay to form thorium-234. While alpha particles have
Alpha_decay
Nuclear energy extracted from thorium isotopes
the isotope uranium-233 produced from the fertile element thorium. A thorium fuel cycle can offer several potential advantages over a uranium fuel cycle—including
Thorium-based_nuclear_power
F-block chemical elements
produced by bombarding uranium-238 with neon-22 as U 92 238 + Ne 10 22 ⟶ No 102 256 + 4 0 1 n {\displaystyle {\ce {_{92}^{238}U + _{10}^{22}Ne -> _{102}^{256}No
Actinide
Isotope of uranium
Uranium-233 (233 U or U-233) is a fissile isotope of uranium that is bred from thorium-232 as part of the thorium fuel cycle. Uranium-233 was investigated
Uranium-233
Radioactive toy lab set
(Po-210) in the form of a wire Four glass jars containing natural uranium-bearing (U-238) ore samples (autunite, torbernite, uraninite, and carnotite from
Gilbert U-238 Atomic Energy Laboratory
Gilbert_U-238_Atomic_Energy_Laboratory
Nuclear material pure enough to be used for nuclear weapons
For example, the critical mass of uranium-238 is infinite, while the critical masses of uranium-233 and uranium-235 are finite. The critical mass for
Weapons-grade nuclear material
Weapons-grade_nuclear_material
Isotope of plutonium
bismuth, except for the three naturally abundant ones: uranium-235 (704 million years), uranium-238 (4.463 billion years), and thorium-232 (14.0 billion
Plutonium-244
When one nuclear reaction causes more
crust. Uranium-235 made up a larger share of uranium on Earth in the geological past because of the different half-lives of the isotopes 235 U and 238 U,
Nuclear_chain_reaction
Topics referred to by the same term
a Unix program to estimate file space Depleted uranium, primarily composed of the isotope uranium-238 Dial-up, a form of Internet access via telephone
DU
greater efficiency was the inward momentum of the massive U-238 tamper. (The natural uranium tamper did not undergo fission from thermal neutrons, but did
Nuclear_weapon_design
Series of British nuclear weapons tests
from its thermonuclear fusion reaction instead of fission of a heavy uranium-238 tamper—the dense material surrounding the core that kept the reacting
Operation_Grapple
Process of manufacturing and using nuclear fuel
reactor, in particular the common uranium isotope U-238 and thorium, respectively, and can be separated from spent uranium and thorium fuels in reprocessing
Nuclear_fuel_cycle
American physicist (1901–1958)
separating the fissile isotope uranium-235 from uranium-238, a process known today as uranium enrichment. Separating uranium isotopes was difficult because
Ernest_Lawrence
Multi-stage fusion-fission nuclear weapon
"pusher-tamper", a heavy layer of uranium-238 (238 U) or lead that helps compress the fusion fuel (and, in the case of uranium, may eventually undergo fission
Thermonuclear_weapon
Group of chemical elements
of uranium-238. Strontium-90 and barium-140 are common fission products of uranium in nuclear reactors, accounting for 5.73% and 6.31% of uranium-235's
Alkaline_earth_metal
Nucleosynthesis pathway
as of 2018[update]. An r-process-like series of neutron captures (on uranium-238 normally) occurs to a minor extent in thermonuclear weapon explosions
R-process
1938 achievement in physics
reactions were from different isotopes of uranium; three were known: uranium-238, uranium-235 and uranium-234. However, when she calculated the neutron
Discovery_of_nuclear_fission
Power generated from nuclear reactions
reactors, which use uranium-235 (0.7% of all natural uranium), fast-neutron breeder reactors use uranium-238 (99.3% of all natural uranium) or thorium. A number
Nuclear_power
Mining waste byproduct
enrichment. They contain the radioactive decay products from the uranium decay chains, mainly the U-238 chain, and heavy metals. Long-term storage or disposal of
Uranium_tailings
Uranium recovered from spent nuclear fuel reprocessing
Reprocessed uranium (RepU) is the uranium recovered from nuclear reprocessing, as done commercially in France, the UK and Japan and by nuclear weapons
Reprocessed_uranium
German nuclear chemist and Nobel laureate (1879–1968)
reactions were from different isotopes of uranium; three were known: uranium-238, uranium-235 and uranium-234. However, when she calculated the neutron
Otto_Hahn
in spent nuclear fuel after the uranium-235 primary fuel that a nuclear power reactor uses has burnt up. The uranium-238 from which most of the plutonium
Reactor-grade_plutonium
Measure of ionizing radiation in the environment
thorium-230 in decay chain of uranium-238) and radon-222 (a decay product of radium-226 in said chain). Thorium and uranium (and their daughters) primarily
Background_radiation
Device for controlled nuclear reactions
fissile nuclei uranium-235, plutonium-239, and plutonium-241, and a relatively lower probability of neutron capture by uranium-238 (U-238) compared to the
Nuclear_reactor
Type of nuclear fuel
primarily by uranium-238. Most of the fuel mass in a reactor is uranium-238. By neutron capture and two successive beta decays, uranium-238 becomes plutonium-239
MOX_fuel
Uranium-rich oxide mineral
the spontaneous fission of uranium-238. Francium can also be found in uraninite at 1 francium atom for every 1 × 1018 uranium atoms in the ore as a result
Uraninite
Cloud of debris and smoke from a large explosion
composition. For example, uranium-237 is a unique thermonuclear explosion marker, as it is produced by a (n,2n) reaction from uranium-238, with the minimal neutron
Mushroom_cloud
Fission from a high energy neutron
enriched uranium or plutonium at the reactor startup so that the neutrons have a better chance of fissioning atoms. Some atoms, notably uranium-238, do not
Fast_fission
Secret laboratory established by the Manhattan Project
breeding plutonium in nuclear reactors from uranium-238 atoms that absorbed neutrons from fissioning uranium-235 atoms. At this point no reactor had been
Project_Y
Substance that can be converted into material for use in nuclear fission
include: thorium-232 which converts into uranium-233 uranium-234 which converts into uranium-235 uranium-238 which converts into plutonium-239 Artificial
Fertile_material
Rate of temperature increase with depth in Earth's interior
sources. The major heat-producing nuclides in Earth are potassium-40, uranium-238, uranium-235, and thorium-232. The inner core is thought to have temperatures
Geothermal_gradient
Classification of fissile nuclear material
processes. However, uranium-235 is produced from uranium ore, which contains 0.7% uranium-235 with most of the rest consisting of uranium-238. Since they are
Special_nuclear_material
Chemical element with atomic number 100 (Fm)
244Pu: this could only have formed by the absorption of six neutrons by a uranium-238 nucleus followed by two β− decays. At the time, the absorption of neutrons
Fermium
Type of nuclear fission reactor
reactor is fueled primarily by depleted uranium-238 "fertile fuel", but requires a small amount of enriched uranium-235 or other "fissile fuel" to initiate
Traveling_wave_reactor
Nuclear reactor that uses moderated neutrons
thermal neutrons are more likely to cause uranium-235 to nuclear fission than to be captured by uranium-238. If at least one neutron from the U-235 fission
Thermal-neutron_reactor
Uranium mine in India
The Jaduguda Mine (also spelt as Jadugoda or Jadugora) is a uranium mine in Jaduguda village in the Purbi Singhbhum district of the Indian state of Jharkhand
Jaduguda_uranium_mine
Radiometric dating technique
the number of fission events produced from the spontaneous decay of uranium-238 in common accessory minerals to date the time of rock cooling below closure
Fission_track_dating
Smallest amount of fissile material needed to sustain a nuclear reaction
undergo a chain reaction. For example, a spherical critical mass of pure uranium-235 (235U) with a mass of about 52 kilograms (115 lb) would experience
Critical_mass
Chemical element with atomic number 93 (Np)
reactions in uranium ores. 239Np and 237Np are the most common of these isotopes; they are directly formed from neutron capture by uranium-238 atoms. These
Neptunium
formed as part of the uranium series i.e., the normal radioactive decay chain of uranium-238 that terminates in lead-206. Uranium has been present since
Health_effects_of_radon
British nuclear weapons research during WW2
7% of uranium-235 from the 99.3% of uranium-238. This is difficult because the two types of uranium are chemically identical. Separation (uranium enrichment)
Tube_Alloys
Former uranium enrichment plant in Pike County, Ohio, USA
diffusion of uranium hexafluoride to separate the lighter fissile isotope, uranium-235 (U-235), from the heavier non-fissile isotope, uranium-238. The plant
Portsmouth Gaseous Diffusion Plant
Portsmouth_Gaseous_Diffusion_Plant
Radioactivity naturally present within the Earth
The concentration and location of some natural isotopes, particularly uranium-238 (238U), can be affected by human activity, such as nuclear weapons testing
Environmental_radioactivity
Process of creating new atomic nuclei from existing nucleons
nuclear decay of many long-lived primordial isotopes, especially uranium-235, uranium-238, and thorium-232 produces many intermediate daughter nuclides before
Nucleosynthesis
URANIUM 238
URANIUM 238
Girl/Female
Arabic, Australian, Muslim
To Recite in a Sing Song Voice
Female
Greek
(ΤηθÏÏ‚) Greek name TETHYS means "grandmother; nurse." In mythology, this is the name of a Titaness and sea goddess, the daughter of Ouranos (Latin Uranus) and Gaia (Latin Gæa).
Boy/Male
Greek
Sky.
Female
Hebrew
(×ï¬µ×¨Ö¸× Ö´×™×ª) Hebrew name URANIT means "light."
Girl/Female
Australian, British, Christian, English, French, German, Greek, Italian, Portuguese
Heavenly; Muse of Astronomy
Girl/Female
Greek
Heavenly.
Girl/Female
Greek
Crane.
Female
German
German form of Roman Latin Porcius, PORSCHE means "pig." A moon of Uranus was given this name.
Female
Hebrew
(×ֲרִי×ֵל) Hebrew unisex name ARI'EL means "lion of god." In the bible, this is a name applied to the city of Jerusalem, and the name of a chief of the returning exiles. In the Apocrypha, this is the name of an archangel who rules the waters. It is also the name of a moon of Uranus, and the name of a spirit in Shakespeare's play "The Tempest."Â
Male
Greek
(Ωκεανός) Greek name OKEANOS means "ocean." In mythology, this is the name of a Titan, son of Uranus and Gaia, the personification of the world-ocean once believed to encircle the world.
Surname or Lastname
English
English : variant spelling of Francom.
Female
English
English name which may be an elaborated form of the Latin word cor, CORDELIA means "heart." This is the name of a legendary queen of the Britons. It is also the name of a moon of Uranus and an asteroid, both of which were named after a Shakespeare character who also bore this name.
Female
English
English Shakespeare character name derived from Roman Latin Porcius, PORTIA means "pig." A moon of Uranus was given this name.
Surname or Lastname
English
English : from Anglo-Norman French gerner ‘granary’ (Old French grenier, from Late Latin granarium, a derivative of granum ‘grain’). It may have been a topographic name for someone who lived near a barn or granary, or a metonymic occupational name for someone in charge of the stores kept in a granary.English : variant of Warner 1, from a central Old French form.English : reduced form of Gardener.South German : from an agent derivative of Middle High German garn ‘thread’; by extension, an occupational name for a fisherman.Altered spelling of Gerner.
Girl/Female
Indian
Great, Famous, Peace protector
Male
English
 Anglicized form of Hebrew unisex Ari'el, ARIEL means "lion of god." In the bible, this is a name applied to the city of Jerusalem, and the name of a chief of the returning exiles. In the Apocrypha, this is the name of an archangel who rules the waters. It is also the name of a moon of Uranus, and the name of a spirit in Shakespeare's play "The Tempest."
Surname or Lastname
English and French
English and French : topographic name for someone who lived by a granary, from Middle English, Old French grange (Latin granica ‘granary’, ‘barn’, from granum ‘grain’). In some cases, the surname has arisen from places named with this word, for example in Dorset and West Yorkshire in England, and in Ardèche and Jura in France. The Marquis de Lafayette owned a property named Lagrange, and there used to be a place in VT so named in his honor.
Girl/Female
Muslim
Great, Famous, Peace protector (1)
Female
Greek
(Παλλάς) Greek unisex name derived from the word pallô, PALLAS means "to brandish a weapon." In mythology, this is the name of many characters in Greek mythology: a son of Euandros (Latin Evander); a giant son of Ouranos (Latin Uranus) and Gaia; a Titan son of Krios (Latin Crius) and Eurybia; the father of the 50 Pallantids; a daughter of Triton; and it is an epithet of Athene.Â
URANIUM 238
URANIUM 238
Boy/Male
Hindi
The supreme god.
Female
Czechoslovakian
, of Magdala.
Boy/Male
Gaelic Celtic Irish
White.
Boy/Male
Muslim
Of noble descent, Intelligent
Boy/Male
Tamil
Gift An enlightened person
Girl/Female
Muslim/Islamic
Giving happiness
Boy/Male
Tamil
Experienced, Wise, Liberal
Boy/Male
Hindu, Indian
Great Person
Male
Dutch
, a Jacobin.
Girl/Female
Arabic
Dew
URANIUM 238
URANIUM 238
URANIUM 238
URANIUM 238
URANIUM 238
n.
The skull of an animal; especially, that part of the skull, either cartilaginous or bony, which immediately incloses the brain; the brain case or brainpan. See Skull.
n.
An alkaline salt of fluorescein, obtained as a brownish red substance, which is used as a dye; -- so called from the peculiar yellowish green fluorescence (resembling that of uranium glass) of its solutions. See Fluorescein.
a.
Of or pertaining to the planet Uranus; as, the Uranian year.
n.
The bony cranium, as distinguished from the cartilaginous cranium.
a.
Within the cranium or skull.
a.
Pertaining to, or containing, uranium; designating those compounds in which uranium has a lower valence as contrasted with the uranic compounds.
n.
A mineral occurring in emerald-green tabular crystals having a micaceous structure. It is a hydrous phosphate of uranium and copper. Called also copper uranite, and chalcolite.
n.
Scientific examination of the cranium.
n.
An element of the chromium group, found in certain rare minerals, as pitchblende, uranite, etc., and reduced as a heavy, hard, nickel-white metal which is quite permanent. Its yellow oxide is used to impart to glass a delicate greenish-yellow tint which is accompanied by a strong fluorescence, and its black oxide is used as a pigment in porcelain painting. Symbol U. Atomic weight 239.
n.
The contents of the cranium; the brain.
a.
A combining form (also used adjectively) from uranium; -- used in naming certain complex compounds; as in uranoso-uranic oxide, uranoso-uranic sulphate.
a.
Pertaining to, resembling, or containing uranium; specifically, designating those compounds in which uranium has a valence relatively higher than in uranous compounds.
pl.
of Cranium
a.
Of or pertaining to uranium; containing uranium.
n.
A general term for the uranium phosphates, autunite, or lime uranite, and torbernite, or copper uranite.
n.
The dove's-foot geranium (Geranium molle).
pl.
of Cranium
a.
Of or pertaining to the cranium.
pl.
of Bucranium
n.
The periosteum which covers the cranium externally; the region around the cranium.