rat

rat
A rodent of the genus Rattus (family Muridae), involved in the spread of some diseases, including bubonic plague.
- albino rats rats with white fur and pink eyes; used extensively in laboratory experiments.
- Wistar rats an inbred strain of rats, homozygous at most loci, produced by strict brother-sister inbreeding over many generations to develop animals for research with the same general genetic composition. [Wistar Institute]
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repeat action tablet; rheumatoid arthritis test; right anterior trigone

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rat 'rat n any of the numerous rodents (family Muridae) of Rattus and related genera that differ from the murid mice by their usu. considerably larger size and by features of the teeth and other structures and that include forms (as the brown rat, the black rat, and the roof rat) which live in and about human habitations and in ships, have become naturalized by commerce in most parts of the world, and are destructive pests consuming or destroying vast quantities of food and other goods and acting as vectors of various diseases (as bubonic plague)

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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 around human dwellings. Rats not only cause great economic loss but also are vectors of 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 disease, and rat-bite fever. Albino mutants of some species are used as laboratory animals.

Medical dictionary. 2011.

Игры ⚽ Поможем написать реферат
Synonyms:
(from interested motives),


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  • rat — rat …   Dictionnaire des rimes

  • rat — [ ra ] n. m. • fin XIIe; p. ê. de l all. ratt , onomat. née du bruit du rat qui grignote, ou dér. roman de radere « ronger » (Guiraud) 1 ♦ Petit mammifère rongeur (muridés) à museau pointu et à très longue queue nue et écailleuse, répandu sur… …   Encyclopédie Universelle

  • rat — 1. (ra) s. m. Voy. ras 2. ras ou rat 2. (ra) s. m. Terme de marine. Ras de carène, ou simplement ras, nom du plancher flottant dont on se sert pour calfater, nettoyer et chauffer les carènes des navires. Le feu qui a pris à un ras à calfater qui… …   Dictionnaire de la Langue Française d'Émile Littré

  • Rat — (r[a^]t), n. [AS. r[ae]t; akin to D. rat, OHG. rato, ratta, G. ratte, ratze, OLG. ratta, LG. & Dan. rotte, Sw. r[*a]tta, F. rat, Ir. & Gael radan, Armor. raz, of unknown origin. Cf. {Raccoon}.] 1. (Zo[ o]l.) One of several species of small… …   The Collaborative International Dictionary of English

  • rat — rȁt m <N mn ovi> DEFINICIJA 1. oružani sukob velikih razmjera između dviju ili više država, dvaju naroda, dviju ljudskih skupina [navijestiti rat; biološki rat; elektronski rat; imperijalistički rat; kolonijalni rat; obrambeni rat]; vojna,… …   Hrvatski jezični portal

  • rat — RAT. s. m. Petit animal à qui les chats donnent la chasse, qui a le museau pointu, les pieds courts, & la queuë longue, & qui ronge & mange les grains, la paille, les meubles, les tapisseries, &c. Gros rat. petit rat. les rats courent toute la… …   Dictionnaire de l'Académie française

  • RAT — bezeichnet einen Ratschlag eine beratende und beschlussfassende Gruppe von gewählten oder benannten Vertretern oder Kollegen, sowie die Vertreter selbst, siehe Gremium die beschlussfassende Gemeindevertretung einer Stadt, siehe Stadtrat den Rat… …   Deutsch Wikipedia

  • Rat — bezeichnet einen Ratschlag eine beratende und beschlussfassende Gruppe von gewählten oder benannten Vertretern oder Kollegen, sowie die Vertreter selbst, siehe Gremium einen Titel für Beamte und Richter, siehe Amtsbezeichnung historisch für… …   Deutsch Wikipedia

  • RAT — RAT  аббревиатура Remote Administration Tool. Remote Administration Tool означает в переводе с английского «средство удаленного администрирования» или «средство удаленного управления». Термин получил распространение среди системных… …   Википедия

  • Rat — • Rat der; [e]s, Plural (für Personen und Institutionen) Räte – sich Rat holen – jemanden um Rat fragen – bei jemandem Rat suchen – sich D✓Rat suchend oder ratsuchend an jemanden wenden; aber nur zuverlässigen Rat suchend – einen D✓Ratsuchenden… …   Die deutsche Rechtschreibung

  • rat — (n.) O.E. ræt, of uncertain origin. Similar words are found in Celtic (Gael. radan), Romanic (It. ratto, Sp. rata, Fr. rat) and Germanic (M.L.G. rotte, Ger. ratte) languages, but connection is uncertain and origin unknown. Perhaps from V.L.… …   Etymology dictionary

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