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An organ in certain fungi and lichens, surrounding and enveloping the masses of fructification. Henslow.

Cleaving in more directions than one, parallel to the axis.

Same as Peritoneum.

Of or pertaining to the peritoneum.

rning back, surrounds the viscera, forming a closed, or nearly closed, sac. [Written also peritonæum.]

Inflammation of the peritoneum.

Surrounding the tracheæ.

The edge of the aperture of a univalve shell.

A division of ciliated Infusoria having a circle of cilia around the oral disk and sometimes another around the body. It includes the vorticellas. See Vorticella.

The wheel which, together with the axle, forms the axis in peritrochio, which see under Axis.

Having the axis of the seed perpendicular to the axis of the pericarp to which it is attached.

Peritropal.

Inflammation of the connective tissue about the cæcum.

Surrounding the uterus.

Around the blood vessels; as, perivascular lymphatics.

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.