| francium | <chemical> Francium. A radioactive alkali metal with the atomic symbol fr, atomic number 87, and atomic weight 223. The mass numbers of other known isotopes are 204-213, 217-222, and 224. Its valence is +1. Chemical name: Francium (12 Dec 1998) |
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| Francke's needle | A small lancet-shaped spring-activated needle, used to evacuate a small effusion of blood. (05 Mar 2000) |
| Francke, Karl | <person> German physician, 1859-1920. See: Francke's needle. (05 Mar 2000) |
| francolin | <zoology> A spurred partidge of the genus Francolinus and allied genera, of Asia and Africa. The common species (F. Vulgaris) was formerly common in southern Europe, but is now nearly restricted to Asia. Origin: F.; cf. It. Francolino, Sp. Francolin. Source: Websters Dictionary (01 Mar 1998) |
| francolite | <chemical> A variety of apatite from Wheal Franco in Devonshire. Source: Websters Dictionary (01 Mar 1998) |
| frangipanni | A perfume derived from, or imitating the odour of, the flower of the red jasmine, a West Indian tree of the genus Plumeria. Origin: Another spelling of frangipane. Source: Websters Dictionary (01 Mar 1998) |
| frangula | The bark of Rhamnus frangula (family Rhamnaceae); a laxative or cathartic. (05 Mar 2000) |
| frangulic acid | Synonym: emodin. Origin: see frangula (05 Mar 2000) |
| frangulin | <chemistry> A yellow crystalline dyestuff, regarded as a glucoside, extracted from a species (Rhamnus Frangula) of the buckthorn. Synonym: rhamnoxanthin. Source: Websters Dictionary (01 Mar 1998) |
| frangulinic | <chemistry> Pertaining to, or drived from, frangulin, or a species (Rhamnus Frangula) of the buckthorn. <chemistry> Frangulinic acid, a yellow crystalline substance, resembling alizarin, and obtained by the decomposition of frangulin. Source: Websters Dictionary (01 Mar 1998) |
| franion | A paramour; a loose woman; also, a gay, idle fellow. Origin: Perh. From F. Faineant an idler. Source: Websters Dictionary (01 Mar 1998) |
| frank | 1. <ethnology> A member of one of the German tribes that in the fifth century overran and conquered Gaul, and established the kingdom of France. 2. A native or inhabitant of Western Europe; a European; a term used in the Levant. 3. A French coin. See Franc. Origin: Cf. F. Franc. See Frank. <zoology> The common heron; so called from its note. Source: Websters Dictionary (01 Mar 1998) |
| Frank, Otto | <person> German physiologist, 1865-1944. See: Frank-Starling curve. (05 Mar 2000) |
| frank-marriage | A certain tenure in tail special; an estate of inheritance given to a man his wife (the wife being of the blood of the donor), and descendible to the heirs of their two bodies begotten. Origin: Frank free + marriage. Source: Websters Dictionary (01 Mar 1998) |
| Frank-Starling curve | A graph in which cardiac output or stroke volume is plotted against mean atrial or ventricular end-diastolic pressure; with increasing venous return and atrial pressure the output proportionately increases until further increments overload the heart and the output falls. Synonym: Frank-Starling curve. (05 Mar 2000) |