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A white crystalline compound of piperidine and piperic acid. It is obtained from the black pepper (Piper nigrum) and other species.

A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.

A hydrocarbon obtained by decomposition of certain piperidine derivatives.

A fiber obtained from the Agave Americana and other related species, -- used for making cordage and paper. Called also pita fiber, and pita thread.

A thick, black, lustrous, and sticky substance obtained by boiling down tar. It is used in calking the seams of ships; also in coating rope, canvas, wood, ironwork, etc., to preserve them. He that toucheth pitch shall be defiled therewith. Ecclus. xiii. 1.

A dark blue substance obtained from wood tar. It consists of hydrocarbons which when oxidized form the orange-yellow eupittonic compounds, the salts of which are dark blue.

One who commences a personal action or suit to obtain a remedy for an injury to his rights; -- opposed to Ant: defendant.

oldings, etc.; or calcined gypsum used as a fertilizer. Plaster cast, a copy of an object obtained by pouring plaster of Paris mixed with water into a mold. -- Plaster of Paris. Etym: [So called because originally brought from a suburb of Paris.] (Chem.) Anhydrous calcium sulphate, or calcined gypsum, which forms with…

ng to, or designating, an acid consisting of platinic chloride and hydrochloric acid, and obtained as a brownish red crystalline substance, called platinichloric, or chloroplatinic, acid.

d from, or designating, an acid compound of platinous cyanide and hydrocyanic acid. It is obtained as a cinnaber-red crystalline substance.

black (Chem.), a soft, dull black powder, consisting of finely divided metallic platinum obtained by reduction and precipitation from its solutions. It absorbs oxygen to a high degree, and is employed as an oxidizer. -- Platinum lamp (Elec.), a kind of incandescent lamp of which the luminous medium is platinum. See u…

Obtaining approbation; specifically pleasing; apparently right; specious; as, a plausible pretext; plausible manners; a plausible delusion. "Plausible and popular arguments." Clarendon.

A tracing of the respiratory movements, obtained by a pneumatograph or stethograph.

Of or pertaining to the polariscope; obtained by the use of a polariscope; as, polariscopic observations.

many diseases. [Obs.] Polychrest salt (Old Med. Chem.), potassium sulphate, specifically obtained by fusing niter with sulphur.

Showing a variety, or a change, of colors. Polychromatic acid (Old Chem.), a substance obtained by the action of nitric acid on aloes.

Of, pertaining to, or obtained from, Polygala; specifically, designating an acrid glucoside (called polygalic acid, senegin, etc.), resembling, or possibly identical with, saponin.

aglio matrix is produced: and from this matrix, in a similar way, a polytype in relief is obtained. Hansard.

A unit of power, being the power obtained from an expenditure of one hundred kilogram-meters of energy per second. One poncelet equals g watts, when g is the value of the acceleration of gravity in centimeters.

wy polypetalous flowers and a milky juice. From one species (Papaver somniferum) opium is obtained, though all the species contain it to some extent; also, a flower of the plant. See Illust. of Capsule. California poppy (Bot.), any yellow-flowered plant of the genus Eschscholtzia. -- Corn poppy. See under Corn. -- Ho…