Por"ce*lain (?), n. (Bot.) Purslain. [Obs.]

Por"ce*lain (277), n. [F. porcelaine, It. porcellana, orig., the

porcelain shell, or Venus shell (CyprÊa porcellana), from a dim. fr. L.

porcus pig, probably from the resemblance of the shell in shape to a

pig's back. Porcelain was called after this shell, either on account of

its smoothness and whiteness, or because it was believed to be made

from it. See Pork.] A fine translucent or semitransculent kind of

earthenware, made first in China and Japan, but now also in Europe and

America; -- called also China, or China ware.

Porcelain, by being pure, is apt to break.

Dryden.

Ivory porcelain, porcelain with a surface like ivory, produced by

depolishing. See Depolishing. -- Porcelain clay. See under Clay. --

Porcelain crab (Zoˆl.), any crab of the genus Porcellana and allied

genera (family PorcellanidÊ). They have a smooth, polished carapace. --

Porcelain jasper. (Min.) See Porcelanite. -- Porcelain printing, the

transferring of an impression of an engraving to porcelain. --

Porcelain shell (Zoˆl.), a cowry.

Por"ce*lain*ized (?), a. (Geol.) Baked like potter's lay; -- applied to

clay shales that have been converted by heat into a substance

resembling porcelain.

{ Por`ce*la"ne*ous (?), Por`cel*la"ne*ous (?), } a. 1. Of or pertaining

to porcelain; resembling porcelain; as, porcelaneous shells.

2. (Zoˆl.) Having a smooth, compact shell without pores; -- said of

certain Foraminifera.

Por"ce*la*nite (?), n. [Cf. F. porcelanite.] (Min.) A semivitrified

clay or shale, somewhat resembling jasper; -- called also porcelain

jasper.

{ Por"ce*la`nous (?), Por"cel*la`nous (?), } a. Porcelaneous. Ure.

Porch (?), n. [F. porche, L. porticus, fr. porta a gate, entrance, or

passage. See Port a gate, and cf. Portico.] 1. (Arch.) A covered and

inclosed entrance to a building, whether taken from the interior, and

forming a sort of vestibule within the main wall, or projecting without

and with a separate roof. Sometimes the porch is large enough to serve

as a covered walk. See also Carriage porch, under Carriage, and Loggia.

The graceless Helen in the porch I spied Of Vesta's temple.

Dryden.

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