Search the Dictionary

An accumulation of serous fluid in the cavity of the chest.

A cavity, or excavation, made in the snow by a seal, over its breathing hole in the ice.

A central cavity in the Ctenophora, into which the gastric sac leads.

force in; as, to inject cold water into a condenser; to inject a medicinal liquid into a cavity of the body; to inject morphine with a hypodermic syringe.

That which is injected; especially, a liquid medicine thrown into a cavity of the body by a syringe or pipe; a clyster; an enema. Mayne.

A small opening; a small depression or cavity; a space, as a vacant space between the cells of plants, or one of the spaces left among the tissues of the lower animals, which serve in place of vessels for the circulation of the body fluids, or the cavity or sac, usually of very small size, in a mucous membrane.…

A movable piece which holds anything in place by entering a notch or cavity; specifically, the catch which holds a door or gate when closed, though it be not bolted.

A cavity or hollow.[Obs.] Sir M. Hale.

A spherulitic cavity often with concentric chambers, observed in some volcanic rocks, as in rhyolitic lavas. It is supposed to be produced by expanding gas, whence the name.

A very large glandular and vascular organ in the visceral cavity of all vertebrates.

Divided into secondary compartments or cells, as where one cavity is separated into several smaller ones.

(Biol.) An opening, space, or cavity, esp. a tubular cavity; a vacuole.

A genus of nemertean worms, parasitic in the gill cavity of clams and other bivalves. They have a large posterior sucker, like that of a leech. See Illust. of Bdellomorpha.

ld, or folds, of the soft, exterior membrane of the body of a mollusk. It usually forms a cavity inclosing the gills. See Illusts. of Buccinum, and Byssus.

leura (and the space included between them) which divide the thorax into a right and left cavity. The space included between these folds of the pleura, called the mediastinal space, contains the heart and gives passage to the esophagus and great blood vessels.

is distinguished from the stomod, a part at the anterior end of the canal, including the cavity of the mouth, and the proctod, a part at the posterior end, which are formed by invagination and are lined with epiblast.

, which connect the intestines and their appendages with the dorsal wall of the abdominal cavity. The mesentery proper is connected with the jejunum and ilium, the other mesenteries being called mesoc, mesocolon, mesorectum, etc.

The fold of peritoneum which suspends the ovary from the dorsal wall of the body cavity.

Having the cranial cavity of medium capacity; neither megacephalic nor microcephalic.

The cavity of the mesencephalon; the iter.