| fraxin | <chemistry> A colourless crystalline substance, regarded as a glucoside, and found in the bark of the ash (Fraxinus) and along with esculin in the bark of the horse-chestnut. It shows a delicate fluorescence in alkaline solutions. Synonym: paviin. Origin: From Fraxinus. Source: Websters Dictionary (01 Mar 1998) |
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| fraxinus | <botany> A genus of deciduous forest trees, found in the north temperate zone, and including the true ash trees. Fraxinus excelsior is the European ash; F. Americana, the white ash; F. Sambucifolia, the black ash or water ash. Origin: L, the ash tree. Source: Websters Dictionary (01 Mar 1998) |
| fray | Affray; broil; contest; combat. "Who began this bloody fray?" (Shak) Origin: Abbreviated from affray. Source: Websters Dictionary (01 Mar 1998) |
| fraying | <zoology> The skin which a deer frays from his horns. Source: Websters Dictionary (01 Mar 1998) |
| Frazier's needle | A needle for draining lateral ventricles of brain. (05 Mar 2000) |
| Frazier, Charles | <person> U.S. Surgeon, 1870-1936. See: Frazier's needle, Frazier-Spiller operation. (05 Mar 2000) |
| Frazier-Spiller operation | Division or section of a sensory root of the fifth cranial nerve, accomplished through a subtemporal (Frazier-Spiller operation), suboccipital (Dandy operation), or transtentorial approach. Synonym: retrogasserian neurectomy, retrogasserian neurotomy. (05 Mar 2000) |