Search the Dictionary

Relating to or resembling perlite, or pearlstone; as, the perlitic structure of certain rocks. See Pearlite.

ercible gases, before their liquefaction in 1877. -- Permanent way, the roadbed and superstructure of a finished railway; -- so called in distinction from the contractor's temporary way. -- Permanent white (Chem.), barium sulphate (heavy spar), used as a white pigment or paint, in distinction from white lead, which t…

arden, leading to a terrace or to an upper story; -- usually applied to mediævel or later structures of some architectural pretensions.

Any structure shaped like a church pew, as a stall, formerly used by money lenders, etc.; a box in theater; a pen; a sheepfold. [Obs.] Pepys. Milton. Pew opener, an usher in a church. [Eng.] Dickens.

Of or relating to the voice; as, phonal structure. Max Müller.

A branch of a plumularian hydroid specially modified in structure for the protection of the gonothecæ.

the laws of nature; also, of or relating to natural or material things, or to the bodily structure, as opposed to things mental, moral, spiritual, or imaginary; material; natural; as, armies and navies are the physical force of a nation; the body is the physical part of man. Labor, in the physical world, is . . . empl…

The natural constitution, or physical structure, of a person. With his white hair and splendid physique. Mrs. Stowe.

n a harbor where the ground is soft, for the support of a building, a pier, or other superstructure, or to form a cofferdam, etc.

The general and popular term for a firm, upright, insulated support for a superstructure; a pier, column, or post; also, a column or shaft not supporting a superstructure, as one erected for a monument or an ornament. Jacob set a pillar upon her grave. Gen. xxxv. 20. The place . . . vast and proud, Supported by a hundr…

A form of dentine which shows sinuous lines of structure in a transverse section of the tooth.

or paddle for cleaning the plowshare; a paddle staff. (b) A plow handle. -- Snow plow, a structure, usually

. Plumed adder (Zoöl.), an African viper (Vipera, or Clotho, cornuta), having a plumelike structure over each eye. It is venomous, and is related to the African puff adder. Called also horned viper and hornsman. -- Plumed partridge (Zoöl.), the California mountain quail (Oreortyx pictus). See Mountain quail, under Mou…

A chitinous structure which supports the gill in some invertebrates.

A low wall, serving as a foundation, a substructure, or a terrace wall. It is especially employed by archæologists in two senses:

The act of voting, or of registering a vote. Polling booth, a temporary structure where the voting at an election is done; a polling place.

lids, believed to be an ancient or ancestral type. It is remarkable for its simplicity of structure and want of parapodia. It is the type of the order Archiannelida, or Gymnotoma. See Loeven's larva.

A coral, or corallum; also, one of the coral-like structure made by bryozoans and hydroids.

Bridgework; structure or edifice of a bridge. [R.] Milton.

A rock with a porphyritic structure; as, augite porphyrite.