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Of or pertaining to the Rodentia.

An order of mammals having two (rarely four) large incisor teeth in each jaw, distant from the molar teeth. The rats, squirrels, rabbits, marmots, and beavers belong to this order.

Corrosive. [R.] Bp. King.

A medicine which eats away extraneous growths; a caustic.

A rodent of the genus Dasyprocta, about the size of a rabbit, peculiar to South America and the West Indies. The most common species is the Dasyprocta agouti.

adagascar (Cheiromys Madagascariensis), remarkable for its long fingers, sharp nails, and rodent-like incisor teeth.

An amphibious rodent, of the genus Castor.

A North American rodent, so named because it is said to make a booming noise. See Sewellel.

A large South American rodent (Hydrochærus capybara) Living on the margins of lakes and rivers. It is the largest extant rodent, being about three feet long, and half that in height. It somewhat resembles the Guinea pig, to which it is related; -- called also cabiai and water hog.

A genus of rodents, including the beaver. See Beaver.

A rodent of the genera cavia and Dolichotis, as the guinea pig (Cavia cabaya). Cavies are natives of South America. Water cavy (Zoöl.), The capybara.

timate. -- Cheek pouch (Zoöl.), a sacklike dilation of the cheeks of certain monkeys and rodents, used for holding food. -- Cheeks of a block, the two sides of the shell of a tackle block. -- Cheeks of a mast, the projection on each side of a mast, upon which the trestletrees rest. -- Cheek tooth (Anat.), a hinder…

A small rodent (Lagamys princeps) inhabiting the summits of the Rocky Mountains; -- also called crying hare, calling hare, cony, American pika, and little chief hare.

A south American rodent of the genus Lagotis.

A small rodent (Chinchilla lanigera), of the size of a large squirrel, remarkable for its fine fur, which is very soft and of a pearly gray color. It is a native of Peru and Chili.

A South American rodent (Myopotamus coypus), allied to the beaver. It produces a valuable fur called nutria. [Written also coypou.]

A Chilian burrowing rodent of the genus Spalacopus.

A small South American rodent (Octodon Cumingii), of the family Octodontidæ.

A small European rodent of the genus Myoxus, of several species. They live in trees and feed on nuts, acorns, etc.; -- so called because they are usually torpid in winter.

An adjective suffix signifying action or being; as, corrodent, excellent, emergent, continent, quiescent. See -ant.