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Glossary of Chemistry Terms
beginning with letter T
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TA Tweet Definition of TA Like Definition of TA on Facebook
  1. transportation, Transportation authority, Authority
  2. teaching, Teaching assistant, Assistant
  3. territorial, Territorial army, Army
tall oil Tweet Definition of tall oil Like Definition of tall oil on Facebook
  1. A dark yellow resinous acidic oil obtained as a byproduct during the pulping of pine; it is used in the manufacture of soaps and lubricants
tannic Tweet Definition of tannic Like Definition of tannic on Facebook
  1. Pertaining to, containing, or obtained from tannin.
tannic acid Tweet Definition of tannic acid Like Definition of tannic acid on Facebook
  1. (chemistry) any of various complex phenols extracted from the bark or galls of trees; used in tanning
tannin Tweet Definition of tannin Like Definition of tannin on Facebook
  1. (chemistry) tannic acid or any of its derivatives
tantalate Tweet Definition of tantalate Like Definition of tantalate on Facebook
  1. (chemistry) any salt of tantalic acid
tantalic Tweet Definition of tantalic Like Definition of tantalic on Facebook
  1. (chemistry) Containing pentavalent tantalum.
tantalic acid Tweet Definition of tantalic acid Like Definition of tantalic acid on Facebook
  1. (chemistry) the hydrated form of tantalum oxide, Ta2O5
tantalous Tweet Definition of tantalous Like Definition of tantalous on Facebook
  1. (chemistry) Containing tantalum in a higher proportion than tantalic compounds.
tantalum Tweet Definition of tantalum Like Definition of tantalum on Facebook
  1. A metallic chemical element (symbol Ta) with an atomic number of 73.
tar Tweet Definition of tar Like Definition of tar on Facebook
noun (wikipedia, tar, tar (viscous substance))
  1. (uncountable) A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal.
  2. coal tar, Coal tar.
  3. (uncountable) A solid residual byproduct of tobacco smoke.
  4. (context, slang, dated) A sailor, because of their tarpaulin clothes. Also Jack Tar.
  5. (computing) a program for archiving files, common on Unix
  6. (computing) a file produced by such a program
  1. To coat with tar.
  2. (computing) To create a tar archive.
tare Tweet Definition of tare Like Definition of tare on Facebook
  1. (rare) A vetch, or the seed of a vetch.
  2. (rare) A damaging weed growing in fields of grain (with reference to Matthew 13:25: "But while men slept, his enemy came and sowed tares among the wheat, and went his way." The King James Version (Authorized))
  • 1985, I saw as I thought an uncle and guardian who has led a sober, industrious and Christian life and finds himself obliged to look on the tares of folly in his own close kin. " John Fowles, A Maggot
verb (tar, ing)
  1. To allow for the tare; to set a counter or meter to a valid zero (usually weight) value, discounting the weight of the empty container.
tartar Tweet Definition of tartar Like Definition of tartar on Facebook
  1. A red compound deposited during wine making; mostly potassium hydrogen tartrate - a source of cream of tartar.
  2. A hard yellow deposit on the teeth.
tartaric acid Tweet Definition of tartaric acid Like Definition of tartaric acid on Facebook
  1. a white crystalline acid that occurs naturally in many plants, and in wine; it is used as the salts cream of tartar and Rochelle salt
  1. (chemistry) a dihydroxy-dicarboxylic acid, 2,3 dihydroxy-succinic acid
tartrate Tweet Definition of tartrate Like Definition of tartrate on Facebook
  1. (chemistry) any salt or ester of tartaric acid
tartrazine Tweet Definition of tartrazine Like Definition of tartrazine on Facebook
  1. (chemistry) a lemon-yellow azo dye used as a food colouring
taurine Tweet Definition of taurine Like Definition of taurine on Facebook
  1. (biochemistry) An amino-sulfonic acid, NH2CH2CH2SO3H, that has regulatory functions in mammals.
  1. Pertaining to a bull; bull-like.
taurocholic Tweet Definition of taurocholic Like Definition of taurocholic on Facebook
  1. Pertaining to taurine and bile; only used in designation of taurocholic acid.
tautomerism Tweet Definition of tautomerism Like Definition of tautomerism on Facebook
  1. (chemistry) A form of isomerism in which a dynamic equilibrium between two isomers exists, such as that between an enol and a ketone. category:Organic chemistry
TB Tweet Definition of TB Like Definition of TB on Facebook
  1. tuberculosis
  1. (baseball) The statistic reporting "Total Bases". A single is counted as one, a double as two, a triple as three, and a home run as four bases.
TC Tweet Definition of TC Like Definition of TC on Facebook
  1. (internet) Topic Closed. Used in Internet forums to announce that a topic thread is locked, indicating that no further replies are allowed in that topic thread.
  2. (electronics) Time Counter.
  3. (electronics) thermocouple
  4. (internet messaging) Acronym for Take Care.
TCA Tweet Definition of TCA Like Definition of TCA on Facebook
  1. tricyclic antidepressant
tear gas Tweet Definition of tear gas Like Definition of tear gas on Facebook
  1. Any lachrymatory non-lethal chemical compound that causes the eyes to sting and water and/or irritates the respiratory system, mostly used for controlling crowds during riots or as self-defence.
technetium Tweet Definition of technetium Like Definition of technetium on Facebook
  1. a metallic chemical element (symbol Tc) with an atomic number of 43.
Teflon Tweet Definition of Teflon Like Definition of Teflon on Facebook
proper noun 
  1. A registered trademark of DuPont? for its multiple film, resin, coatings, fabric and surface protectors made with PTFE (polytetrafluoroethylene)or fluoropolymer and surfactants not made with PTFE only authorized under license by DuPont? to its customers and licensees.
  1. (of a politician) having an undamaged reputation.
tel Tweet Definition of tel Like Definition of tel on Facebook
  1. telephone
tellurate Tweet Definition of tellurate Like Definition of tellurate on Facebook
  1. (chemistry) any salt of telluric acid
telluric Tweet Definition of telluric Like Definition of telluric on Facebook
  1. Pertaining to the Earth.
  1. (chemistry) Containing tellurium in a lower valency than in tellurous compounds.
telluric acid Tweet Definition of telluric acid Like Definition of telluric acid on Facebook
  1. (chemistry) the hydrated form of tellurium oxide, H6TeO?6, with some use as a reagent
telluride Tweet Definition of telluride Like Definition of telluride on Facebook
noun (wikipedia, Telluride (chemistry))
  1. (chemistry) (countable) A compound of a metal with tellurium; metal salts of tellurane
  2. (chemistry) (countable) Any organic compound of general formula R2Te (R not = H), the tellurium analogues of ethers
  3. (mineralogy) (uncountable) Another name for sylvanite.
tellurium Tweet Definition of tellurium Like Definition of tellurium on Facebook
  1. (uncountable) The chemical element with atomic number 52. Symbol: Te.
tellurous Tweet Definition of tellurous Like Definition of tellurous on Facebook
  1. (chemistry) Containing tellurium in a higher valency than in telluric compounds.
terpene Tweet Definition of terpene Like Definition of terpene on Facebook
  1. (organic chemistry) A very large class of naturally occurring and synthetic organic compounds formally derived from the hydrocarbon isoprene; they include many volatile compounds used in perfume and food flavours, turpentine, the steroids, the carotene pigments and rubber.
terpolymer Tweet Definition of terpolymer Like Definition of terpolymer on Facebook
  1. a copolymer derived from three species of monomer
tervalent Tweet Definition of tervalent Like Definition of tervalent on Facebook
  1. (chemistry) trivalent
Test Tweet Definition of Test Like Definition of Test on Facebook
  1. (cricket) (sometimes test) a Test match
test paper Tweet Definition of test paper Like Definition of test paper on Facebook
  1. a paper submitted to an examination by a student
  2. a small piece of paper impregnated with a chemical indicator for making qualitative tests
tetrabasic Tweet Definition of tetrabasic Like Definition of tetrabasic on Facebook
  1. (chemistry) (of an acid) containing four replaceable hydrogen atoms
  2. (chemistry) (of a salt) having four atoms of a univalent metal
tetracene Tweet Definition of tetracene Like Definition of tetracene on Facebook
  1. (organic compound) A polycyclic aromatic hydrocarbon; the acene containg four fused rings.
tetrachloride Tweet Definition of tetrachloride Like Definition of tetrachloride on Facebook
  1. (chemistry) any chloride containing four chlorine atoms in each molecule
tetrad Tweet Definition of tetrad Like Definition of tetrad on Facebook
  1. A group of four things.
  2. Chemistry. A tetravalent atom or radical.
  3. Biology. Two pairs of sister chromatids (a dyad pair) aligned in a certain way and often on the equatorial plane during the meiosis process.
tetrafluoride Tweet Definition of tetrafluoride Like Definition of tetrafluoride on Facebook
  1. (chemistry) any chloride containing four fluorine atoms in each molecule
tetrahydrofuran Tweet Definition of tetrahydrofuran Like Definition of tetrahydrofuran on Facebook
  1. (chemistry) a heterocyclic ether having a five-membered ring with four carbon atoms and one carbon; it is a colourless liquid with an ether-like smell, and is used as a polar solvent
tetravalent Tweet Definition of tetravalent Like Definition of tetravalent on Facebook
  1. (chemistry) having a valence of 4
tetroxide Tweet Definition of tetroxide Like Definition of tetroxide on Facebook
  1. (chemistry) any oxide containing four oxygen atoms in each molecule
Th Tweet Definition of Th Like Definition of Th on Facebook
  1. Thursday.
  2. (biblical) Book of Thessalonians.
thallic Tweet Definition of thallic Like Definition of thallic on Facebook
  1. Pertaining to or containing the element thallium, especially with valence 3.
  2. Pertaining to a thallus.
thallium Tweet Definition of thallium Like Definition of thallium on Facebook
  1. a metallic chemical element (symbol Tl) with atomic number 81.
thebaine Tweet Definition of thebaine Like Definition of thebaine on Facebook
  1. (poison) A poisonous alkaloid, paramorphine, obtained from opium; not used in medicine.
thermochemistry Tweet Definition of thermochemistry Like Definition of thermochemistry on Facebook
  1. (context, chemistry, physics) The study of the thermodynamics of chemical reactions.
thermoplastic Tweet Definition of thermoplastic Like Definition of thermoplastic on Facebook
  1. a material with this property; a thermoplastic resin
  1. softening when heated and hardening when cooled
thermosetting Tweet Definition of thermosetting Like Definition of thermosetting on Facebook
  1. becoming permanently hard or solidifying when heated; used especially of synthetic plastics such as Bakelite
thiazole Tweet Definition of thiazole Like Definition of thiazole on Facebook
  1. (organic compound) Any of a class of unsaturated heterocyclic compounds containing a ring of three carbon atoms, a sulphur and an nitrogen atom; especially the simplest one, C3H3SN.
thickener Tweet Definition of thickener Like Definition of thickener on Facebook
  1. any substance added to something in order to thicken it; a thickening agent
thin-layer chromatography Tweet Definition of thin-layer chromatography Like Definition of thin-layer chromatography on Facebook
noun (abbreviation TLC)
  1. (analytical chemistry) A form of chromatography in which the solid phase is silica gel or a similar inert material supported on a glass plate.
thinner Tweet Definition of thinner Like Definition of thinner on Facebook
  1. A liquid substance used to thin the consistency of another liquid.
''Turpentine or mineral spirits can be used as a for oil based paints.
  1. (comparative of, thin, lang=English, POS=adjective)
thioaldehyde Tweet Definition of thioaldehyde Like Definition of thioaldehyde on Facebook
  1. (chemistry) any analogue of an aldehyde, or general formula RC(=S)H, in which the oxygen has been replaced by sulfur
thiocyanate Tweet Definition of thiocyanate Like Definition of thiocyanate on Facebook
  1. (chemistry) any salt or ester of thiocyanic acid; or the -SCN radical or the SCN-1 anion
thiocyanic acid Tweet Definition of thiocyanic acid Like Definition of thiocyanic acid on Facebook
  1. (chemistry) a poisonous unstable liquid, HSCN; its salts and esters, the thiocyanates have a variety of uses
thiol Tweet Definition of thiol Like Definition of thiol on Facebook
  1. (chemistry) a univalent organic radical (-SH) containing a sulphur and a hydrogen atom; a compound containing such a radical
thiophene Tweet Definition of thiophene Like Definition of thiophene on Facebook
noun thoophene
  1. (chemistry) Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and an sulphur atom; especially the simplest one, C4H4S.
thiophosphate Tweet Definition of thiophosphate Like Definition of thiophosphate on Facebook
  1. (chemistry) Any compound formally derived from a phosphate by replacing one or more oxygen atoms with sulfur
thiosulfate Tweet Definition of thiosulfate Like Definition of thiosulfate on Facebook
  1. (chemistry) any salt or ester of thiosulfuric acid
thiosulfuric acid Tweet Definition of thiosulfuric acid Like Definition of thiosulfuric acid on Facebook
  1. (inorganic compound) An unstable acid, H2S2O3, formally derived from sulfuric acid by the substitution of a sulfur atom for an oxygen one; it is known only in solution or as its salts and esters, the thiosulfates.
thixotropy Tweet Definition of thixotropy Like Definition of thixotropy on Facebook
  1. (Chemistry, Medicine) The property of some gels to become a fluid when agitated and return to being solid or semi-solid when allowed to stand.
thorium Tweet Definition of thorium Like Definition of thorium on Facebook
  1. a chemical element (symbol Th) with atomic number 90.
TI Tweet Definition of TI Like Definition of TI on Facebook
  1. (italbrac, company) Texas instrument, Instruments.
  2. (electronics) time, Time interval, Interval.
  3. (italbrac, organization) w:Transparency International, Transparency International.
  4. (italbrac, company) w:Treasure Island Hotel and Casino, Treasure Island Hotel and Casino.
tin Tweet Definition of tin Like Definition of tin on Facebook
  1. (context, uncountable, element) A malleable, ductile, metallic element, resistant to corrosion, with atomic number 50 and symbol Sn.
  2. (context, British, countable) An airtight container, made of tin or another metal, used to preserve food.
  3. (countable) A metal pan used for baking, roasting, etc.
verb (tin, n, ing)
  1. (transitive) To place into a tin in order to preserve.
  2. (transitive) To cover with tin.
  3. (transitive) To coat with solder in preparation for soldering.
  1. Made of tin.
titanate Tweet Definition of titanate Like Definition of titanate on Facebook
  1. (chemistry) any salt (or ester) of titanic acid
Titanic Tweet Definition of Titanic Like Definition of Titanic on Facebook
proper noun the Titanic
(wikipedia, RMS Titanic)
  1. A cruise liner that sink, sank on its maiden voyage on April 14, 1912; now a cautionary tale about overconfidence.
  1. Of, or relating to the Titans, a race in ancient mythology.
titanic acid Tweet Definition of titanic acid Like Definition of titanic acid on Facebook
  1. (chemistry) a weak acid, either of two hydrated forms of titanium dioxide, H2TiO?3 or H4TiO?4; used as a mordant
titanium Tweet Definition of titanium Like Definition of titanium on Facebook
noun (Symbol: Ti)
  1. a chemical element, atomic number 22; it is a strong, corrosion-resistant transition metal, used to make light alloys for aircraft etc .
titanium dioxide Tweet Definition of titanium dioxide Like Definition of titanium dioxide on Facebook
  1. (chemistry) a brilliant white powder, TiO?2, used as a pigment, and in sunblock, toothpaste and cosmetics
titrant Tweet Definition of titrant Like Definition of titrant on Facebook
  1. (analytical chemistry) The reagent of known concentration and volume used in titrations.
titrate Tweet Definition of titrate Like Definition of titrate on Facebook
verb (titrat, es)
  1. (context, transitive, analytical chemistry) To ascertain the amount of a constituent in a solution (or other mixture) by measuring the volume of a known concentration (the "standard solution") needed to complete a reaction.
  • 2005: He was obsessed with making LSD even purer than Sandoz, producing it first in powder form in gelatin capsules as well as light-blue liquid ("Mother's Milk") that was easily recognizable when titrated onto sugar cubes. " Martin Torgoff, Can't Find My Way Home (Simon & Schuster 2005, p. 122)
TN Tweet Definition of TN Like Definition of TN on Facebook
  1. Tennessee, a state of the United States of America.
  1. telephone number, Telephone number.
TNT Tweet Definition of TNT Like Definition of TNT on Facebook
  1. Trinitrotoluene, an explosive substance used in blasting.
  2. (informal) dynamite, Dynamite, an explosive.
transactinide Tweet Definition of transactinide Like Definition of transactinide on Facebook
  1. (chemistry),(physics) any of the artificially produced elements having an atomic number greater than 103
  1. (chemistry),(physics) lying beyond actinium in the periodic table; having an atomic number greater than 103
tribromide Tweet Definition of tribromide Like Definition of tribromide on Facebook
  1. (chemistry) any bromide containing three bromine atoms in each molecule
trimolecular Tweet Definition of trimolecular Like Definition of trimolecular on Facebook
  1. (chemistry) (of a reaction) involving three molecules
trinitrotoluene Tweet Definition of trinitrotoluene Like Definition of trinitrotoluene on Facebook
  1. A highly explosive yellow crystaline substance (CH3C6H2(NO2)3)
trioxide Tweet Definition of trioxide Like Definition of trioxide on Facebook
  1. (chemistry) any oxide containing three oxygen atoms in each molecule
  2. (chemistry) any organic compound of general formula R-OOO-R', derived from trioxidane
triphosphate Tweet Definition of triphosphate Like Definition of triphosphate on Facebook
  1. (chemistry) any salt or ester containing three phosphate groups
  2. (chemistry) any salt or ester of triphosphoric acid
triphosphoric acid Tweet Definition of triphosphoric acid Like Definition of triphosphoric acid on Facebook
  1. (chemistry) a condensation product of phosphoric acid, H5P3O10, known from its salts and esters
triple bond Tweet Definition of triple bond Like Definition of triple bond on Facebook
  1. (chemistry) A covalent bond in which three electron pairs (instead of the usual one) are shared between two atoms; most common between carbon atoms and carbon or nitrogen atoms, but a few other forms are known. Symbolized in formulae as �.
trisodium Tweet Definition of trisodium Like Definition of trisodium on Facebook
  1. (chemistry) (in combination) three atoms of sodium in a compound
tritium Tweet Definition of tritium Like Definition of tritium on Facebook
  1. (isotope) A radioactive isotope of the element hydrogen, (symbol T or (nuclide, 3, 1, H)), having one proton and two neutrons
triturate Tweet Definition of triturate Like Definition of triturate on Facebook
verb (triturates, triturating, triturated)
  1. to grind to a fine powder, to pulverize
trituration Tweet Definition of trituration Like Definition of trituration on Facebook
  1. the act of triturating; grinding to a fine powder
  2. something triturated, especially dental amalgam
trivalent Tweet Definition of trivalent Like Definition of trivalent on Facebook
  1. (chemistry) having a valence of 3
trivial Tweet Definition of trivial Like Definition of trivial on Facebook
  1. Of little significance or value.
  2. common, Common, ordinary.
  3. Concerned with or involving trivia.
  4. (biology) Relating to or designating the name of a species; specific as opposed to generic.
  5. (mathematics) Of, relating to, or being the simplest possible case.
  6. (mathematics) self-evident, Self-evident.
tropine Tweet Definition of tropine Like Definition of tropine on Facebook
  1. a poisonous alkaloid obtained by the hydrolysis of atropine
tsp Tweet Definition of tsp Like Definition of tsp on Facebook
  1. teaspoon
tungstate Tweet Definition of tungstate Like Definition of tungstate on Facebook
  1. (chemistry) any salt of tungstic acid
tungsten Tweet Definition of tungsten Like Definition of tungsten on Facebook
  1. a metallic chemical element (symbol W) with an atomic number of 74. The symbol is derived from the Latin word wolframium.
tungstic Tweet Definition of tungstic Like Definition of tungstic on Facebook
  1. (chemistry) of or relating to tungsten
  2. (chemistry) containing hexavalent tungsten
tungstic acid Tweet Definition of tungstic acid Like Definition of tungstic acid on Facebook
  1. (chemistry) the solid hydrated form of tungsten oxide, H2WO4; used in textiles, and in yellow glazes
turpentine Tweet Definition of turpentine Like Definition of turpentine on Facebook
noun (or turps)
  1. a volatile essential oil obtained from the wood of pine trees by steam distillation; it is a complex mixture of monoterpenes; it is used as a solvent and paint thinner

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