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rat

(rat),
A rodent of the genus Rattus (family Muridae), involved in the spread of some diseases, including bubonic plague.
Farlex Partner Medical Dictionary © Farlex 2012

rat

(răt)
n.
a. Any of various long-tailed rodents resembling mice but larger, especially one of the genus Rattus.
b. Any of various animals similar to one of these long-tailed rodents.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

RAT

Abbreviation for:
radiation therapy
recombinant human antithrombin
Remuneration And Terms (of service committee)
rheumatoid arthritis test
right atrial tachycardia
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

rat

Infectious disease A rodent, genus Rattus, which is a vector and/or reservoir of disease–eg, Bunyaviridae, black plague, rat-bite fever Vox populi A dishonorable person. See Lab rat, Weasel.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

rat

(rat)
A rodent of the genus Rattus, a widespread predator and pest that attacks wild and domestic animals, consumes or damages crops and stored foodstuffs, and is involved in transmission of diseases (e.g., intestinal parasites, plague, typhus, rat-bite fever) to humans; laboratory rats belong to albino strains of the Norway rat, R. norvegicus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012