a soft grey malleable metallic element that resembles tin but discolors on exposure to air
thorium
Noun
a soft silvery-white tetravalent radioactive metallic element
thorium-228
Noun
radioactive isotope of thorium with mass number 228
thulium
Noun
a soft silvery metallic element of the rare earth group
titanium
Noun
a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts)
type metal
Noun
an alloy of tin and lead and antimony used to make printing type
transparent quartz
Noun
a clear quartz used in making electronic and optical equipment
thrombin
Noun
an enzyme that acts on fibrinogen in blood causing it to clot
tumor necrosis factor
Noun
a proinflammatory cytokine that is produced by white blood cells monocytes and macrophages
topsoil
Noun
the layer of soil on the surface
tumour necrosis factor
Noun
a proinflammatory cytokine that is produced by white blood cells (monocytes and macrophages)
tremolite
Noun
a white or pale green mineral (calcium magnesium silicate) of the amphibole group used as a form of asbestos
thiazine
Noun
a compound made up of a ring of four carbon atoms and one sulfur atom and one nitrogen atom
thiodiphenylamine
Noun
a compound used primarily in veterinary medicine to rid farm animals of internal parasites
testosterone
Noun
a potent androgenic hormone produced chiefly by the testes
trans fatty acid
Noun
a fatty acid that has been produced by hydrogenating an unsaturated fatty acid (and so changing its shape)
theelin
Noun
a naturally occurring weak estrogenic hormone secreted by the mammalian ovary
tributyrin
Noun
a bitter oily triglyceride of butyric acid
tetrachloromethane
Noun
a colorless nonflammable liquid used as a solvent for fats and oils
tetramethyldiarsine
Noun
a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups
thiamine pyrophosphate
Noun
a coenzyme important in respiration in the Krebs cycle
top fermenting yeast
Noun
brewer's yeast used in top fermentation of ale
template RNA
Noun
the template for protein synthesis
tri-iodothyronine
Noun
thyronine with three iodine atoms added
thinner
Noun
a diluting agent
trichloroethylene
Noun
a heavy colorless highly toxic liquid used as a solvent to clean electronic components and for dry cleaning and as a fumigant
trichloroethane
Noun
a heavy colorless highly toxic liquid used as a solvent to clean electronic components and for dry cleaning and as a fumigant
transudate
Noun
a substance that transudes
turd
Noun
obscene terms for feces
transposon
Noun
a segment of DNA that can become integrated at many different sites along a chromosome (especially a segment of bacterial DNA that can be translocated as a whole)
tektite
Noun
thought to derive from meteorites
toxic waste
Noun
poisonous waste materials
tachylite
Noun
a basic or basalt glass
toxic industrial waste
Noun
poisonous waste materials
taconite
Noun
a variety of chert containing magnetite and hematite
twins
Noun
(mineralogy) two interwoven crystals that are mirror images on each other
turpentine
Noun
volatile liquid distilled from an oleoresin obtained from pine trees
turps
Noun
volatile liquid distilled from turpentine oleoresin
triglyceride
Noun
glyceride occurring naturally in animal and vegetable tissues
trinitroglycerin
Noun
a heavy yellow poisonous oily explosive liquid obtained by nitrating glycerol
thyroprotein
Noun
a preparation made from iodinated protein and having an action similar to thyroxine
thyroglobulin
Noun
an iodine containing protein that is obtained from the thyroid gland and exhibits the general properties of the globulins
tripoli
Noun
a weathered and decomposed siliceous limestone
tuff
Noun
hard volcanic rock composed of compacted volcanic ash
tufa
Noun
hard volcanic rock composed of compacted volcanic ash
tufa
Noun
a soft porous rock consisting of calcium carbonate deposited from springs rich in lime
tartar emetic
Noun
a poisonous colorless salt used as a mordant and in medicine
tartrate
Noun
a salt or ester of tartaric acid
tall oil
Noun
an oil derived from wood pulp and used in making soaps or lubricants