PHENAKISTOSCOPE
Phen`a*kis"to*scope, n. Etym: [Gr. -scope.]
Defn: A revolving disk on which figures drawn in different relative attitudes are seen successively, so as to produce the appearance of an object in actual motion, as an animal leaping, etc., in consequence of the persistence of the successive visual impressions of the retina. It is often arranged so that the figures may be projected upon a screen.
PHENALGIN
Phe*nal"gin, n. [Phenyl + analgetic + -in.] (Pharm.)
Defn: An ammoniated compound of phenyl and acetamide, used as an analgesic and antipyretic. It resembles phenacetin in its therapeutic action.
PHENANTHRENE
Phe*nan"threne, n. Etym: [Phenyl + antracene.] (Chem.)
Defn: A complex hydrocarbon, C14H10, found in coal tar, and obtained as a white crystalline substance with a bluish fluorescence.
PHENANTHRIDINE
Phe*nan"thri*dine, n. Etym: [Phenanthrene + pyridine.] (Chem.)
Defn: A nitrogenous hydrocarbon base, C13H9N, analogous to phenanthrene and quinoline.
PHENANTHROLINE
Phe*nan"thro*line, n. Etym: [Phenanthrene + quinoline.] (Chem.)
Defn: Either of two metameric nitrogenous hydrocarbon bases, C12H8N2, analogous to phenanthridine, but more highly nitrogenized.