Note: The dactylic pentameter consists of two parts separated by a diæresis. Each part consists of two dactyls and a long syllable. The spondee may take the place of the dactyl in the first part, but not in the second. The elegiac distich consists of the hexameter followed by the pentameter. Harkness.
PENTAMETER
Pen*tam"e*ter, a.
Defn: Having five metrical feet.
PENTAMETHYLENE
Pen`ta*meth"yl*ene, n. Etym: [Penta- + methylene.] (Chem.)
Defn: A hypothetical hydrocarbon, C5H10, metameric with the amylenes, and the nucleus of a large number of derivatives; — so named because regarded as composed of five methylene residues. Cf. Trimethylene, and Tetramethylene.
PENTANDRIA
Pen*tan"dri*a, n. pl. Etym: [NL., fr. Gr. Penta-) + (Bot.)
Defn: A Linnæan class of plants having five separate stamens.
PENTANDRIAN; PENTANDROUS
Pen*tan"dri*an, Pen*tan"drous, a. (Bot.)
Defn: Of or pertaining to the class Pentadria; having five stamens.
PENTANE
Pen"tane, n. Etym: [See Penta-.] (Chem.)