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  • English Word Thinnish Definition Somewhat thin.
  • English Word Thinolite Definition A calcareous tufa, in part crystalline, occurring on a large scale as a shore deposit about the Quaternary lake basins of Nevada.
  • English Word Thio- Definition A combining form (also used adjectively) denoting the presence of sulphur. See Sulpho-.
  • English Word Thiocarbonate Definition A sulphocarbonate.
  • English Word Thiocarbonic Definition Same as Sulphocarbonic.
  • English Word Thiocyanate Definition Same as Sulphocyanate.
  • English Word Thiocyanic Definition Same as Sulphocyanic.
  • English Word Thionaphthene Definition A double benzene and thiophene nucleus, C8H6S, analogous to naphthalene, and like it the base of a large series of derivatives.
  • English Word Thionic Definition Of or pertaining to sulphur; containing or resembling sulphur; specifically, designating certain of the thio compounds; as, the thionic acids. Cf. Dithionic, Trithionic, Tetrathionic, etc.
  • English Word Thionine Definition An artificial red or violet dyestuff consisting of a complex sulphur derivative of certain aromatic diamines, and obtained as a dark crystalline powder; -- called also phenylene violet.
  • English Word Thionol Definition A red or violet dyestuff having a greenish metallic luster. It is produced artificially, by the chemical dehydration of thionine, as a brown amorphous powder.
  • English Word Thionoline Definition A beautiful fluorescent crystalline substance, intermediate in composition between thionol and thionine.
  • English Word Thionyl Definition The hypothetical radical SO, regarded as an essential constituent of certain sulphurous compounds; as, thionyl chloride.
  • English Word Thiophene Definition A sulphur hydrocarbon, C4H4S, analogous to furfuran and benzene, and acting as the base of a large number of substances which closely resemble the corresponding aromatic derivatives.
  • English Word Thiophenic Definition Of, pertaining to, or derived from, thiophene; specifically, designating a certain acid analogous to benzoic acid.
  • English Word Thiophenol Definition A colorless mobile liquid, C6H5.SH, of an offensive odor, and analogous to phenol; -- called also phenyl sulphydrate.
  • English Word Thiophthene Definition A double thiophene nucleus, C6H4S2, analogous to thionaphthene, and the base of a large series of compounds.
  • English Word Thiosulphate Definition A salt of thiosulphuric acid; -- formerly called hyposulphite.
  • English Word Thiosulphuric Definition Of, pertaining to, or designating, an unstable acid, H2S2O3, analogous to sulphuric acid, and formerly called hyposulphurous acid.
  • English Word Thiotolene Definition A colorless oily liquid, C4H3S.CH3, analogous to, and resembling, toluene; -- called also methyl thiophene.
  • English Word Thioxene Definition Any one of three possible metameric substances, which are dimethyl derivatives of thiophene, like the xylenes from benzene.
  • English Word Third Definition Next after the second; coming after two others; -- the ordinal of three; as, the third hour in the day.
  • English Word Third Definition Constituting or being one of three equal parts into which anything is divided; as, the third part of a day.
  • English Word Third Definition The quotient of a unit divided by three; one of three equal parts into which anything is divided.
  • English Word Third Definition The sixtieth part of a second of time.
  • English Word Third Definition The third tone of the scale; the mediant.
  • English Word Third Definition The third part of the estate of a deceased husband, which, by some local laws, the widow is entitled to enjoy during her life.
  • English Word Third-borough Definition An under constable.
  • English Word Third-penny Definition A third part of the profits of fines and penalties imposed at the country court, which was among the perquisites enjoyed by the earl.
  • English Word Thirdings Definition The third part of the corn or grain growing on the ground at the tenant's death, due to the lord for a heriot, as within the manor of Turfat in Herefordshire.