| hardware | The electronic component of a computer. (05 Mar 2000) |
|---|---|
| hardware disease | A condition of cattle, caused by the penetration of the stomach wall, usually the reticulum, by any kind of sharp object (usually metallic) which has been swallowed. Synonym: hardware disease, traumatic reticuloperitonitis. (05 Mar 2000) |
| hardwoods | Usually broad-leaved and deciduous trees. (05 Dec 1998) |
| hardy | 1. Bold; brave; stout; daring; resolu?e; intrepid. "Hap helpeth hardy man alway." (Chaucer) 2. Confident; full of assurance; in a bad sense, morally hardened; shameless. 3. Strong; firm; compact. "[A] blast may shake in pieces his hardy fabric." (South) 4. Inured to fatigue or hardships; strong; capable of endurance; as, a hardy veteran; a hardy mariner. 5. Able to withstand the cold of winter. Plants which are hardy in Virginia may perish in new England. Half-hardy plants are those which are able to withstand mild winters or moderate frosts. Origin: F.hardi, p. P. Fr. OF. Hardir to make bold; of German origin, cf. OHG. Hertan to harden, G. Harten. See Hard. Source: Websters Dictionary (01 Mar 1998) |
| Hardy, George | <person> English mathematician, 1877-1947. See: Hardy-Weinberg equilibrium, Hardy-Weinberg law. (05 Mar 2000) |
| Hardy, LeGrand | <person> U.S. Ophthalmologist, 1895-1954. See: Hardy-Rand-Ritter test. (05 Mar 2000) |
| Hardy-Rand-Ritter test | A test for colour vision deficiency using pseudoisochromatic cards. These excellent cards have not been reprinted by the American Optical Co. Since the plates were accidentally destroyed in 1965. (05 Mar 2000) |
| Hardy-Weinberg equilibrium | <genetics> In a population containing the genotypes of AA, aa, and Aa, the frequency of AA will be p2, the frequency of aa will be q2, and the frequency of Aa will be 2 pq at equilibrium, where p is the frequency of A and q is the frequency of a. By the Hardy-Weinberg law, a ramdonly-mating population will eventually reach these frequencies and be at this equilibrium as long as there are no selection pressures on the population. (09 Oct 1997) |
| Hardy-Weinberg law | <genetics> This genetics law states that the frequencyof a given genotype will reach equilibrium in a randomly mating population and will stay constant over many generations in the absence of selection pressures. (09 Oct 1997) |
| hare | 1. <zoology> A rodent of the genus Lepus, having long hind legs, a short tail, and a divided upper lip. It is a timid animal, moves swiftly by leaps, and is remarkable for its fecundity. The species of hares are numerous. The common European hare is Lepustimidus. The northern or varying hare of America (Lepus Americanus), and the prairie hare (Lepus campestris), turn white in winter. In America, the various species of hares are commonly called rabbits. 2. <astronomy> A small constellation situated south of and under the foot of Orion; Lepus. 3. <zoology> Hare kangaroo See Aplysia. Origin: AS. Hara; akin to D. Haas, G. Hase, OHG. Haso, Dan. Ae Sw. Hare, Icel. Hri, Skr. Aa. (06 Mar 1998) |
| hare's eye | lagophthalmos |
| hare's-ear | <botany> An umbelliferous plant (Bupleurum rotundifolium); so named from the shape of its leaves. Source: Websters Dictionary (01 Mar 1998) |
| hare's-foot fern | <botany> A species of fern (Davallia Canariensis) with a soft, gray, hairy rootstock; whence the name. Source: Websters Dictionary (01 Mar 1998) |
| hare's-tail | <botany> A kind of grass (Eriophorum vaginatum). See Cotton grass, under Cotton. Hare's-tail grass, a species of grass (Lagurus ovatus) whose head resembles a hare's tail. Source: Websters Dictionary (01 Mar 1998) |
| hare-hearted | Timorous; timid; easily frightened. Source: Websters Dictionary (01 Mar 1998) |