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Of or pertaining to the pleural and peritoneal membranes or cavities, or to the pleuroperitoneum.

The pleural and peritoneal membranes, or the membrane lining the body cavity and covering the surface of the inclosed viscera; the peritoneum; -- used especially in the case of those animals in which the body cavity is not divided.

A yellowish-white calcareous freestone from the Isle of Portland in England, much used in building.

A variety of steatite sometimes manufactured into culinary vessels.

A word which has the acute accent on the antepenult.

A product of gastric digestion intermediate between albumin and peptone, identical with hemialbumose.

The primary growth from the spore of a moss, usually consisting of branching confervoid filaments, on any part of which stem and leaf buds may be developed.

Same as Pumice.

A limestone from the Isle of Purbeck in England.

A colorless stone of high luster, made of paste. It is much used as an inexpensive ornament.

The ringed dotterel, or ring plover. [Prov.Eng.]

A stone, often of great size and weight, resting upon another stone, and so exactly poised that it can be rocked, or slightly moved, with but little force.

Same as Oölite.

A stone found at Rosetta, in Egypt, bearing a trilingual inscription, by aid of which, with other inscriptions, a key was obtained to the hieroglyphics of ancient Egypt. Brande & C.

See Rubble, 1 and 2.

A stone for scouring or rubbing; a whetstone; a rub.

A kind of blue sapphire brought from Ceylon. Dana.

A rock made of sand more or less firmly united. Common or siliceous sandstone consists mainly of quartz sand.

A species of calciferous sandstone. [Prov. Eng.]

A stone for sharpening scythes; a whetstone.