The initial idioms of the letter T

thiobacillus	thiobacteria
Thiobacteriaceae	thiocyanate
thiocyanic acid	thiodiphenylamine
thioguanine	thiopentobarbital sodium
thioridazine	thiotepa
thiothixene	thiouracil
third	third base
third baseman	third battle of Ypres
third class	Third Council of Constantinople
third cranial nerve	third deck
third degree	third dimension
Third Epistel of John	third estate
third eye	third eyelid
third gear	third house
Third Lateran Council	third law of motion