THIOSULPHURIC
Thi`o*sul*phur"ic, a. Etym: [Thio- + sulphuric.] (Chem.)
Defn: Of, pertaining to, or designating, an unstable acid, H2S2O3, analogous to sulphuric acid, and formerly called hyposulphurous acid.
THIOTOLENE
Thi`o*to"lene, n. Etym: [Thio- + toluene.] (Chem.)
Defn: A colorless oily liquid, C4H3S.CH3, analogous to, and resembling, toluene; — called also methyl thiophene.
THIOXENE
Thi*ox"ene, n. Etym: [Thiophene + xylene.] (Chem.)
Defn: Any one of three possible metameric substances, which are dimethyl derivatives of thiophene, like the xylenes from benzene.
THIRD Third, a. Etym: [OE. thirde, AS. , fr. , , three; akin to D. derde third, G. dritte, Icel. , Goth. , L. tertius, Gr. t. See Three, and cf. Riding a jurisdiction, Tierce.]
1. Next after the second; coming after two others; — the ordinal of three; as, the thirdhour in the day. "The third night." Chaucer.
2. Constituting or being one of three equal parts into which anything is divided; as, the third part of a day. Third estate. (a) In England, the commons, or the commonalty, who are represented in Parliament by the House of Commons. (b) In France, the tiers état. See Tiers état. Third order (R. C. Ch.), an order attached to a monastic order, and comprising men and women devoted to a rule of pious living, called the third rule, by a simple vow if they remain seculars, and by more solemn vows if they become regulars. See Tertiary, n., 1. — Third person (Gram.), the person spoken of. See Person, n., 7. — Third sound. (Mus.) See Third, n., 3.
THIRD
Third, n.