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pentane any of three colorless liquid isomeric hydrocarbons of the methane series.
Pentateuch the first five books of the Old Testament; Five Books of Moses.
pentathlon in the Olympic games, a five-event contest in which each competitor must ride, on horseback, a cross-country course, run cross-country, swim, fence, and shoot a pistol. [2 definitions]
pentavalent in chemistry, having a valence of five.
Pentecost a Christian festival on the seventh Sunday after Easter, celebrating the descent of the Holy Spirit on the Apostles of Jesus Christ. [2 definitions]
Pentecostal of or pertaining to Pentecost. [2 definitions]
penthouse an apartment or other dwelling situated on the top floor or roof of a usu. tall building. [3 definitions]
pentode a vacuum tube containing five electrodes that is used as a voltage amplifier.
pentose any of several monosaccharides, such as ribose, that have five oxygen atoms in the molecule.
pent-up held in; not released or expressed; confined.
pentyl see "amyl."
penuche a candy, cooked much like fudge, that is made of brown sugar, butter, milk, and nuts.
penult the syllable that is next to the last syllable in a word. [2 definitions]
penultima see penult.
penultimate the next to the last. [2 definitions]
penumbra the partially lighted shadow that surrounds the complete shadow of an opaque body such as the moon during an eclipse. (Cf. umbra.) [3 definitions]
penurious extremely needy or poor; poverty-stricken. [3 definitions]
penury severe poverty; pennilessness. [2 definitions]
Penzance a seaport town in the southwest corner of England and the setting of Gilbert and Sullivan's comic opera, The Pirates of Penzance.
peon an unskilled, usu. agricultural worker in Latin America or the southwestern United States. [2 definitions]
peonage the state or condition of being a peon. [2 definitions]