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Surrounding the vertebræ.

Around the viscera; as, the perivisceral cavity.

Situated around the vitellus, or between the vitellus and zona pellucida of an ovum.

To dress with a periwig, or with false hair. Swift.

Any small marine gastropod shell of the genus Littorina. The common European species (Littorina littorea), in Europe extensively used as food, has recently become naturalized abundantly on the American coast. See Littorina.

A period in the American eocene, the lowest in the tertiary age except the lignitic.

Opposition to imperialism; -- applied specif., in the United States, after the Spanish-American war (1898), to the attitude or principles of those opposing territorial expansion; in England, of those, often called Little Englanders, opposing the extension of the empire and the closer relation of its parts, esp. in matt…

A remedy possessing the property of preventing the return of periodic paroxysms, or exacerbations, of disease, as in intermittent fevers.

Opposed to, or checking motion; acting upward; -- applied to an inverted action of the intestinal tube.

Opposition by which the quality opposed asquires strength; resistance or reaction roused by opposition or by the action of an opposite principle or quality.

Pertaining to antiperistasis.

An aperient medicine or food. Arbuthnot.

Serving to open; aperient. Harvey.

Peril. [Obs.] Shak.

Having rough leaves.

Roughness of surface; unevenness; -- opposed to smoothness. "The asperities of dry bodies." Boyle.

Perishable goods. Bouvier.

The closing subdivision of the Devonian age in America. The rocks of this period are well developed in the Catskill mountains, and extend south and west under the Carboniferous formation. See the Diagram under Geology.

A subdivision of the Quaternary age immediately following the Glacial period; -- so named from beds near Lake Champlain.

A subdivision in the upper part of the Devonian system in America, so named from the Chemung River, along which the rocks are well developed. It includes the Portage and Chemung groups or epochs. See the Diagram under Geology.