| foraminal node | <anatomy> One of the hepatic nodes located adjacent to the epiploic foramen. Synonym: nodus foraminalis, foraminal node. (05 Mar 2000) |
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| foraminifer | <zoology> One of the foraminifera. Source: Websters Dictionary (01 Mar 1998) |
| foraminifera | <zoology> An extensive order of rhizopods which generally have a chambered calcareous shell formed by several united zooids. Many of them have perforated walls, whence the name. Some species are covered with sand. See Rhizophoda. Origin: NL, fr. L. Foramen, -aminis, a foramen + ferre to bear. Source: Websters Dictionary (01 Mar 1998) |
| foraminiferan | <protozoa> A type of protozoan which has a calcareous shell (shell made of calcium carbonate), often large enough to be seen by the naked eye. There are both bottom-dwelling and planktonic species. Foraminifera are important index fossils. (04 Apr 1998) |
| foraminiferous | 1. Possessing openings or foramina. 2. Relating to the Foraminifera. (05 Mar 2000) |
| foraminotomy | <surgery> An operation upon an aperture, usually to open it, e.g., surgical enlargement of the intervertebral foramen. Origin: L. Foramen, aperture, + G. Tome, a cutting (05 Mar 2000) |
| foraminulum | <anatomy> A very minute foramen. Origin: Mod. L. Dim. Of foramen (05 Mar 2000) |
| forb | <botany> A non-woody plant other than a grass, sedge, rush, in contrast to bryophytes, ferns, fern allies and graminoids. Compare: herb. (04 Apr 1998) |
| Forbes' disease | Glycogenosis due to amylo-1,6-glucosidase deficiency, resulting in accumulation of abnormal glycogen with short outer chains in liver and muscle. Synonym: Cori's disease, debranching deficiency limit dextrinosis, limit dextrinosis, Forbes' disease. (05 Mar 2000) |
| Forbes, A | <person> 20th century U.S. Physician. See: Forbes-Albright syndrome. (05 Mar 2000) |
| Forbes, Gilbert | <person> U.S. Paediatrician, *1915. See: Forbes' disease. (05 Mar 2000) |
| Forbes-Albright syndrome | <endocrinology, syndrome> Pituitary tumour in a patient without acromegaly, which secretes excessive amounts of prolactin (LTH) and produces persistent lactation. (05 Mar 2000) |
| forbidden | Prohibited; interdicted. "I knew no spells, use no forbidden arts." (Milton) Forbidden fruit. Any coveted unlawful pleasure, so called with reference to the forbidden fruit of the Garden of Eden. <botany> A small variety of shaddock (Citrus decumana). The name is given in different places to several varieties of Citrus fruits. (04 Apr 1998) |
| force | <physics> Rate of change of momentum with time. Forces are said to cause accelerations via f = ma (Newton's law). There are four primary forces known presently: the gravitational, electromagnetic, weak nuclear, and strong nuclear forces. The gravitational and electromagnetic forces are long-range (dropping as 1/distance^2), while the nuclear forces are short range (effective only within nuclei, distances on the order of 10^-15 metres). The electromagnetic force is much stronger than the gravitational force, but is generally cancelled over large distances because of the balance of positive and negative charges. See: momentum. (04 Apr 1998) |
| force of infection | <epidemiology> The per capita rate at which susceptibles are infected. (05 Dec 1998) |