| tritanomaly | A type of partial colour deficiency due to a deficiency or abnormality of blue-sensitive retinal cones. Origin: G. Tritos, third, + anomalia, irregularity (05 Mar 2000) |
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| tritanopia | Deficient colour perception in which there is an absence of blue-sensitive pigment in the retinal cones. Origin: G. Tritos, third, + an-priv. + ops, eye (05 Mar 2000) |
| triternate | <botany> Three times ternate; applied to a leaf whose petiole separates into three branches, each of which divides into three parts which each bear three leafiets. Origin: Pref. Tri- + ternate. Source: Websters Dictionary (01 Mar 1998) |
| triterpenes | Hydrocarbons or their derivatives formed by the condensation of six isoprene units (equivalent to three terpene units) and containing, therefore, 30 carbon atoms; e.g., squalene, certain steroids, cardiac glycosides. (05 Mar 2000) |
| trithing | One of three ancient divisions of a county in England; now called riding. Alternative forms: riding. See: Ist Riding. Source: Websters Dictionary (01 Mar 1998) |
| trithionate | <chemistry> A salt of trithionic acid. Source: Websters Dictionary (01 Mar 1998) |
| trithionate hydrolase | <enzyme> Converts trithionate to thiosulfate + sulfate the 2h+ Registry number: EC 3.12.1.1 (26 Jun 1999) |
| trithionic | <chemistry> Of or pertaining to, or designating, a certain thionic acid, H2S3O6 which is obtained as a colourless, odorless liquid. Origin: Pref. Tri- + thionic. Source: Websters Dictionary (01 Mar 1998) |
| tritiated | Containing atoms of tritium (hydrogen-3) in the molecule. (05 Mar 2000) |
| tritiated thymidine | Thymidine containing the hydrogen radionuclide, tritium (H); used as a marker to measure and localise by radioautography the synthesis of DNA, into which it is incorporated. (05 Mar 2000) |
| triticeal cartilage | A rounded nodule of cartilage, the size of a grain of wheat, occasionally present in the posterior margin of the lateral thyrohyroid ligament. Synonym: cartilago triticea, corpus triticeum, triticeum. (05 Mar 2000) |
| triticeoglossus | See: musculus triticeoglossus. Origin: L. Triticeum, + G. Glossa, tongue (05 Mar 2000) |
| triticeous | Resembling or shaped like a grain of wheat. Origin: L. Triticeus, fr. Triticum, a grain of wheat (05 Mar 2000) |
| triticeum | Synonym: triticeal cartilage. Origin: L. Triticeus, triticeous, like a grain of wheat (05 Mar 2000) |
| triticin | <chemistry> A carbohydrate isomeric with dextrin, obtained from quitch grass (Agropyrum, formerly Triticum, repens) as a white amorphous substance. Source: Websters Dictionary (01 Mar 1998) |