| biological clock | <biology, physiology> An internal biological mechanism which controls certain biological rhythms and biocycles, such as metabolism, sleep cycles, photosynthesis. (21 Mar 1998) |
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| circadian clock | <physiology> A biological timing mechanism that controls cell synchronisation (a entire population of cells divides simultaneously). (09 Oct 1997) |
| molecular clock | This term has two separate uses. 1. <molecular biology> The rate of fixation of mutations in DNA and thus times the rate of genetic diversification. 2. <cell biology> A biological system capable of maintaining up a timing rhythm or pulse. All such clocks are thought to be entrained by a natural oscillator such as the diurnal rhythm. (18 Nov 1997) |
| ten-o'clock | <botany> A plant, the star-of-Bethlehem. See Star. Source: Websters Dictionary (01 Mar 1998) |
| four-o'clock | 1. <botany> A plant of the genus Mirabilis. There are about half a dozen species, natives of the warmer parts of America. The common four-o'clock is M. Jalapa. Its flowers are white, yellow, and red, and open toward sunset, or earlier in cloudy weather; hence the name. It is also called marvel of Peru, and afternoon lady. 2. <zoology> The friar bird; so called from its cry, which resembles these words. Source: Websters Dictionary (01 Mar 1998) |
| lens clock | A device for measuring the radii of the curvature of a spectacle lens. Synonym: lens clock. Origin: Geneva, Switzerland (05 Mar 2000) |
| calcification, physiologic | Process by which organic tissue becomes hardened by the physiologic deposit of calcium salts. (12 Dec 1998) |
| physiologic | Normal, not pathologic, characteristic of or conforming to the normal functioning or state of the body or a tissue or organ, physiological. (18 Nov 1997) |
| physiologic age | Age estimated in terms of function. (05 Mar 2000) |
| physiologic albuminuria | Presence of slight traces of protein in otherwise normal urine. Synonym: functional albuminuria. (05 Mar 2000) |
| physiologic amenorrhoea | Amenorrhoea of pregnancy or the menopause, not associated with an organic disorder. (05 Mar 2000) |
| physiologic anaemia | An obsolete term for apparent anaemia caused by increased fluid volume of the blood (overhydration). (05 Mar 2000) |
| physiologic anisocoria | A common (20% of normals) benign inequality of the pupils that may change from one hour to the next. Synonym: essential anisocoria, physiologic anisocoria, simple-central anisocoria. (05 Mar 2000) |
| physiologic antidote | An agent that produces systemic effects contrary to those of a given poison. (05 Mar 2000) |
| physiologic congestion | Hyperaemia occurring during functional activity of an organ. Synonym: physiologic congestion. (05 Mar 2000) |