| PDP | pattern disruption point; piperidinopyrimidine; platelet-derived plasma; primer-dependent deoxynucle... |
|---|---|
| PMD | Pelizaeus-Merzbacher disease; posterior mandibular depth; primary myocardial disease; private medici... |
| PVS | percussion, vibration, suction; persistent vegetative state; persistent viral syndrome; Plummer-Vins... |
| PES | Programmed electrical stimulation |
|---|---|
| PVS | Programmed ventricular stimulation |
| programmed timber harvest | A timber harvest scheduled by a management plan to occur at a certain rate. (05 Dec 1998) |
|---|
| programmed cell death | <cell biology, molecular biology> The concept that certain cells are determined to die at specific stages and specific sites during development, for example cells in the spaces between the developing digits of vertebrates, thus dividing them. Programmed cell death occurs by apopotosis. (18 Nov 1997) |
|---|---|
| programmed instruction | A teaching method which employs self-instructional programs enabling the student to learn at his own pace. Teaching machines or programmed textbooks may be used. (12 Dec 1998) |
| timber | 1. That sort of wood which is proper for buildings or for tools, utensils, furniture, carriages, fences, ships, and the like; usually said of felled trees, but sometimes of those standing. Cf. Lumber. "And ta'en my fiddle to the gate, . . . And fiddled in the timber!" (Tennyson) 2. The body, stem, or trunk of a tree. 3. Material for any structure. "Such dispositions are the very errors of human nature; and yet they are the fittest timber to make politics of." (Bacon) 4. A single piece or squared stick of wood intended for building, or already framed; collectively, the larger pieces or sticks of wood, forming the framework of a house, ship, or other structure, in distinction from the covering or boarding. "So they prepared timber . . . To build the house." (1 Kings v. 18) "Many of the timbers were decayed." (W. Coxe) 5. Woods or forest; wooden land. 6. A rib, or a curving piece of wood, branching outward from the keel and bending upward in a vertical direction. One timber is composed of several pieces united. Timber and room. Any larval insect which burrows in timber. Timber yard, a yard or place where timber is deposited. Origin: AS. Timbor, timber, wood, building; akin to OFries. Timber, D. Timmer a room, G. Zimmer, OHG. Zimbar timber, a dwelling, room, Icel. Timbr timber, Sw. Timmer, Dan. Tommer, Goth. Timrjan to build, timrja a builder, L. Domus a house, Gr. House, to build, Skr. Dama a house. 62. Cf. Dome, Domestic. A certain quantity of fur skins, as of martens, ermines, sables, etc, packed between boards; being in some cases forty skins, in others one hundred and twenty. Synonym: timmer. Alternative forms: timbre. Origin: Probably the same word as timber sort of wood; cf. Sw. Timber, LG. Timmer, MHG. Zimber, G. Zimmer, F. Timbre, LL. Timbrium. Cf. Timmer. 1. To light on a tree. 2. <veterinary> To make a nest. Source: Websters Dictionary (01 Mar 1998) |
| timber stand improvement | Intermediate pruning, weeding, and thinning of a stand of timber prior to its reaching mature rotation age to improve growing conditions and control stand composition. (05 Dec 1998) |
| regeneration harvest | A timber harvest method that removes selected trees in the existing stand to a density that allows for the establishment of a new even-aged stand below. (05 Dec 1998) |
| harvest | 1. The gathering of a crop of any kind; the ingathering of the crops; also, the season of gathering grain and fruits, late summer or early autumn. "Seedtime and harvest . . . Shall not cease." (Gen viii. 22) "At harvest, when corn is ripe." (Tyndale) 2. That which is reaped or ready to be reaped or gathed; a crop, as of grain (wheat, maize, etc), or fruit. "Put ye in the sickle, for the harvest is ripe." (Joel III. 13) "To glean the broken ears after the man That the main harvest reaps." (Shak) 3. The product or result of any exertion or labour; gain; reward. "The pope's principal harvest was in the jubilee." (Fuller) "The harvest of a quiet eye." (Wordsworth) Harvest fish See Daddy longlegs. Origin: OE. Harvest, hervest, AS. Haerfest autumn; akin to LG. Harfst, D. Herfst, OHG. Herbist, G. Herbst, and prob. To L. Carpere to pluck, Gr. Fruit. Source: Websters Dictionary (01 Mar 1998) |
| harvest bug | The larva of Trombicula species. (05 Mar 2000) |
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|