thiobacillˈus noun

Any of several rod-shaped bacteria, genus Thiobacillus, that live in soil, sewage, etc and that derive energy from the oxidation of sulphur or sulphur compounds (Thiobacillus ferrooxidans a thiobacillus that, in the presence of water, converts copper sulphide ores into copper sulphate (see bacterial leaching under leach¹))

thiobarbitˈurate noun

A salt of thiobarbituˈric acid (C₆H₄N₂O₂S) similar in effect to a barbiturate

thiocarˈbamide noun

Thiourea

thiocyˈanate noun

A salt of thiocyanˈic acid (HSCN)

thiodiglycol /-dī-glīˈkol/ noun

A chemical compound soluble in eg water and alcohol used eg as an industrial cleaning agent, and also as an ingredient of mustard gas and nerve gas

thio-eˈther noun

A compound in which the ether oxygen has been replaced by sulphur

thīˈol (or /-ōl/) noun

Mercaptan

thīˈonyl adjective

Containing the group -SO

thiopentˈone or (N American) thiopentˈal noun see Pentothal®

thiˈophen /-fen/ or thiˈophene /-fēn/ noun

A five-membered heterocyclic compound with sulphur

thiˈophil adjective

(of eg bacteria) having an affinity for sulphur and its compounds

thiˈo-salt noun

A salt of a thio-acid

thiosulˈphate noun

A salt of thiosulphuric acid (H₂S₂O₃), used in photographic fixing, hypo

thiouracil /thī-ō-ūˈrə-sil/ noun

A derivative of thiourea that interferes with the synthesis of thyroid hormone

thiourea /thī-ō-ūˈri-ə/ noun

Urea with its oxygen replaced by sulphur, a bitter crystalline substance that inhibits thyroid activity and is used in organic synthesis and as a reagent for bismuth (also called thiocarbamide)