rat

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rat

(rat),
A rodent of the genus Rattus (family Muridae), involved in the spread of some diseases, including bubonic plague.

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.

RAT

Abbreviation for:
radiation therapy
recombinant human antithrombin
Remuneration And Terms (of service committee)
rheumatoid arthritis test
right atrial tachycardia

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.

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.

rat

small, furred mammal; members of the family Murinae (Old World rats) and the family Cricetinae (New World rats) both of the order Rodentia. They are omnivorous, nocturnal, do not hibernate and live commensally with humans. They have pointed snouts, a long, thin, almost hairless tail. Only some of the members of the rat and allied groups are listed below.

rat bite fever
streptobacillusmoniliformis.
black rat
Old World rat with long tail and ears. Called also Rattus rattus.
brown rat
Old World rat with short tail and ears. Called also Rattus norvegicus.
rat flea
kangaroo rat
a solitary rodent with long legs with which it progresses in leaps like a kangaroo and uses its large tail as a balancer. Called also Dipodomys deserti.
rat leprosy
a chronic, largely cutaneous disease of rats caused by Mycobacterium lepraemurium and characterized by subcutaneous granuloma and similar involvement of superficial lymph nodes, containing large numbers of acid-fast organisms. The disease has little similarity to nor any relationship with human leprosy. See also feline leprosy.
Long-Evans rat
laboratory rat with brown or black head and shoulders.
musk rat
properly called muskrat and is really a water vole. Called also Ondatra zibethica.
pack rat
New World rat-like creature. Called also Neotoma spp., wood rat.
sand rat
see gerbil.
Sprague-Dawley rat
albino laboratory rat.
rat tooth, teeth
describes the type of points on surgical instruments with a single point on one side which interlocks with two points on the other side.
water rat
properly called water vole; in Australia, water rat is a native rodent Hydromys chrysogaster.
white rat
common laboratory rat.
Wistar rat
a white laboratory rat.
References in classic literature ?
The two rats consulted together for a few minutes and then went away.
Presently the rats came back and set to work to make him into a dumpling.
Nothing could be extracted from them on cross-examination except that there might have been rats in the house, though they were not aware of it.
Some cats, which were originally turned out to destroy the rats and mice, have increased, so as to become a great plague.
Jim has given up that sport himself and confines himself to a little harmless duck- or snipe-shooting, or a little quiet trifling with the rats during the Christmas holidays, after which he will return to the University and try and not be plucked, once more.
The boards creaked beneath their tread, as if resenting the unaccustomed intrusion; nimble spiders, paralysed by the taper's glare, checked the motion of their hundred legs upon the wall, or dropped like lifeless things upon the ground; the death-watch ticked; and the scampering feet of rats and mice rattled behind the wainscot.
The Queen and her daughter had disappeared, but a rat and a mouse were always fighting with each other there.
The king's curiosity, however, prevailing, I am sorry to say, even over his sound religious principles, induced him for this once to postpone the fulfilment of his vow until next morning, for the purpose and with the hope of hearing that night how it fared in the end with the black cat (a black cat, I think it was) and the rat.
Presently one of them, a little, mean-faced, black-bearded fellow with a countenance which reminded Tarzan of Pamba, the rat, laid his hand upon the shoulder of a giant who stood next him, and with whom all the others had been arguing and quarreling.
It must never fight like a rat in a corner, because it must never be rat-like and slink into a corner.
A RAT that was about to emerge from his hole caught a glimpse of a Cat waiting for him, and descending to the colony at the bottom of the hole invited a Friend to join him in a visit to a neighbouring corn-bin.
Twenty minutes before time for him to come home from work she straightens up the house, fixes her rat so it won't show, and gets out a lot of sewing for a ten-minute bluff.