| tri- | 1. <prefix> A prefix meaning three, thrice, threefold; as in tricoloured, tridentate. 2. <chemistry> A prefix (also used adjectively) denoting three proportional or combining part, or the third degree of that to the name of which it is prefixed; as in trisulphide, trioxide, trichloride. Origin: Gr. Tri- or L. Tri-, sometimes through French; akin to L. Tres three, and E. Three. See Three. (29 Oct 1998) |
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| tri-alanyl peptidase | <enzyme> Biliary tract enzyme Registry number: EC 3.4.- (26 Jun 1999) |
| tri-amelia | Absence of three limbs. Origin: tri-+ G. A-priv. + melos, limb (05 Mar 2000) |
| acidulated phosphate fluoride | <chemical> Phosphoric acid, mixt. With sodium fluoride (naf). A sodium fluoride solution, paste or powder, which has been acidulated to pH 3 to 4 and buffered with a phosphate. It is used in the prevention of dental caries. Pharmacological action: fluorides, topical. Chemical name: Phosphoric acid, mixt. With sodium fluoride (NaF) (12 Dec 1998) |
| calcium fluoride | <chemical> Calcium fluoride. Occurring in nature as the mineral fluorite or fluorspar. It is the primary source of fluorine and its compounds. Pure calcium fluoride is used as a catalyst in dehydration and dehydrogenation and is used to fluoridate drinking water. Chemical name: Calcium fluoride (CaF2) (12 Dec 1998) |
| phenylmethylsulfonyl fluoride | <chemical> Alpha-toluenesulfonyl fluoride. An enzyme inhibitor that inactivates irc-50 arvin, subtilisin, and the fatty acid synthetase complex. Pharmacological action: enzyme inhibitors, protease inhibitors. Chemical name: Benzenemethanesulfonyl fluoride (12 Dec 1998) |
| silver fluoride | AgF2-H2O;an antiseptic. (05 Mar 2000) |
| sodium fluoride | <chemical> Sodium fluoride (naf). A source of inorganic fluoride which has been used orally and topically to prevent dental caries. It is also effective as a pesticide and in the therapy of osteoporosis. Pharmacological action: fluorides, topical. Chemical name: Sodium fluoride (NaF) (12 Dec 1998) |
| stannous fluoride | A preparation containing not less than 71.2% of stannous tin and not less than 22.3% nor more than 25.5% of fluoride; used as a prophylactic against caries in dentistry. (05 Mar 2000) |
| fluoride | <chemical> The fluoride ion. Low levels of fluoride in drinking water markedly decrease the incidence of dental caries, probably because bacterial metabolism is much more sensitive to low fluoride levels. (18 Nov 1997) |
| fluoride number | The percent inhibition of pseudocholinesterase produced by fluorides; used to differentiate normal from atypical pseudocholinesterases. See: dibucaine number. (05 Mar 2000) |
| fluoride poisoning | Gen or unspecified fluoride; prefer /pois with specific fluoride term (12 Dec 1998) |
| administration, oral | The giving of drugs, chemicals, or other substances by mouth. (12 Dec 1998) |
| cancer, oral | Cancer of the mouth area. A sore in the mouth that does not heal can be a warning sign of oral cancer. A biopsy is the only to know whether as abnormal area in the oral cavity is cancer. Oral cancer is caused by tobacco (smoking and chewing) and alcohol use. Surgery to remove the tumour in the mouth is the usual treatment for patients with oral cancer. (12 Dec 1998) |
| candidiasis, oral | Infection of the mucous membranes of the mouth by a fungus of the genus candida. (12 Dec 1998) |