| rANP | rat atrial natriuretic peptide |
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| RAR | rapidly adapting receptor; rat insulin receptor; retinoic acid receptor; right arm reclining; right ... |
| RARLS | rabbit anti-rat lymphocyte serum |
| RARTS | rabbit anti-rat thymocyte serum |
| RBL | rat basophilic leukemia; Reid baseline; retinoblastoma-like |
| ratsbane | 1. <chemistry> One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray colour and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356 deg Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenticum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight. Symbol As. 2. Arsenious oxide or arsenious anhydride; called also arsenious acid, white arsenic, and ratsbane. <chemistry> Pertaining to, or derived from, arsenic; said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid. Origin: L. Arsenicum, Gr, yellow orpiment, perh. Fr. Or better Attic masculine, male, on account of its strength, or fr. Per. Zernikh: cf. F. Arsenic. Source: Websters Dictionary (01 Mar 1998) |
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| rattan | <botany> One of the long slender flexible stems of several species of palms of the genus Calamus, mostly East Indian, though some are African and Australian. They are exceedingly tough, and are used for walking sticks, wickerwork, chairs and seats of chairs, cords and cordage, and many other purposes. Origin: Malay rotan Alternative forms: ratan. Source: Websters Dictionary (01 Mar 1998) |
| rattle | 1. A rapid succession of sharp, clattering sounds; as, the rattle of a drum. 2. Noisy, rapid talk. "All this ado about the golden age is but an empty rattle and frivolous conceit." (Hakewill) 3. An instrument with which a ratting sound is made; especially, a child's toy that rattle when shaken. "The rattles of Isis and the cymbals of Brasilea nearly enough resemble each other." (Sir W. Raleigh) "Pleased with a rattle, tickled with a straw." (Pope) 4. A noisy, senseless talker; a jabberer. "It may seem strange that a man who wrote with so much perspicuity, vivacity, and grace, should have been, whenever he took a part in conversation, an empty, noisy, blundering rattle." (Macaulay) 5. A scolding; a sharp rebuke. 6. <zoology> Any organ of an animal having a structure adapted to produce a ratting sound. The rattle of the rattlesnake is composed of the hardened terminal scales, loosened in succession, but not cast off, and so modified in form as to make a series of loose, hollow joints. 7. The noise in the throat produced by the air in passing through mucus which the lungs are unable to expel; chiefly observable at the approach of death, when it is called the death rattle. See Rale. To spring a rattle, to cause it to sound. <botany> Yellow rattle, a yellow-flowered herb (Rhinanthus Crista-galli), the ripe seeds of which rattle in the inflated calyx. Source: Websters Dictionary (01 Mar 1998) |
| rattlebox | 1. A toy that makes a rattle sound; a rattle. 2. <botany> An American herb (Crotalaria sagittalis), the seeds of which, when ripe, rattle in the inflated pod. Any species of Crotalaria, a genus of yellow-flowered herbs, with inflated, many-seeded pods. Source: Websters Dictionary (01 Mar 1998) |
| rattlesnake | <zoology> Any one of several species of venomous American snakes belonging to the genera Crotalus and Caudisona, or Sistrurus. They have a series of horny interlocking joints at the end of the tail which make a sharp ratting sound when shaken. The common rattlesnake of the Northern United States (Crotalus horridus), and the diamond rattlesnake of the south (C. Adamanteus), are the best known. <zoology> Ground rattlesnake, a small rattlesnake (Caudisona, or Sistrurus, miliaria) of the Southern United States, having a small rattle. It has nine large scales on its head. <botany> Rattlesnake fern, a plant of the composite genus Hieracium (H. Venosum); probably so named from its spotted leaves. See also Snakeroot. Source: Websters Dictionary (01 Mar 1998) |
| rattlesnake bite | A venomous (poisonous) snake bite. All rattlesnakes are venomous and secrete poisonous venom. (12 Dec 1998) |
| rattleweed | <botany> Any plant of the genus Astragalus. See Milk vetch. Source: Websters Dictionary (01 Mar 1998) |
| rattlewings | <zoology> The golden-eye. Source: Websters Dictionary (01 Mar 1998) |
| rattlewort | <botany> Same as Rattlebox. Origin: AS. Hraetelwyrt. Source: Websters Dictionary (01 Mar 1998) |
| rattoon | To sprout or spring up from the root, as sugar cane of the previous year's planting. Origin: Cf. Sp. Retonar. Source: Websters Dictionary (01 Mar 1998) |
| Rattus | The rats, a genus of rodents, family Muridae. Rattus rattus, the black r., is the species most commonly responsible for transmitting plague to man by means of its flea, Xenopsylla cheopis; it is smaller and darker in colour than the Norwegian, sewer, or brown rat (Rattus norvegicus) and has longer ears and tail. See: rat. (05 Mar 2000) |
Synonyms :
| rationalization |
(psych.) - Defense mechanism. Justification: creating elaborate explanations for one
출처: www.reasoned.org/glossary.htm
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| rate |
A cost-per-space-unit of print advertising or cost-per-time-unit in radio and TV advertising. Newspapers usually publish rates per column inch or line. The electronic media sell 15-, 30-, or 60-second time units.
출처: www.motto.com/glossary.html
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| rate |
The relationship between two measurements of different units such as change in distance with respect to time (miles per hour).
출처: dorakmt.tripod.com/mtd/glosmath.html
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| rat |
any of numerous small rodents of the genus Rattus and related genera of the family Muridae; many are aggressive and omnivorous pests found about human habitations. Rats not only cause great economic loss but are vectors of human disease; they harbor at least eleven species of intestinal parasites that are transmissible to humans, such as tapeworms, roundworms, and trichinae, and they are reservoirs for the infective agents of plague, typhus, Weil's disease, and rat-bite fever. Albino mutants of R. norvegicus are used as laboratory animals.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| rat f. |
any of various species of Nosopsyllus and Xenopsylla.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| rat | (British) a person who pays local rates (especially a householder) |
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| rat | (British) a local tax on property (usually used in the plural) |
| rat | to some (great or small) extent |
| rat | to a degree (not used with a negative) |
| rat | on the contrary |
| rat | more readily or willingly |
| rat | (informal) a small dirty uncomfortable room |
| rat | a hole (as in the wall of a building) made by rats |
| rat | a tavern below street level featuring beer |
| rat | genus of perennial wildflowers of North American plains and prairies |
| rat | coneflower with flower heads resembling a Mexican hat with a tall red-brown disk and drooping yellow or yellow and red-brown rays |
| rat | plant similar to the Mexican hat coneflower |