Pentachenium :: Pentachenium (n.) A dry fruit composed of five carpels, which are covered by an epigynous calyx and separate at maturity..
Pentachloride :: Pentachloride (n.) A chloride having five atoms of chlorine in each molecule.
Pentachord :: Pentachord (n.) An ancient instrument of music with five strings.
Pentachord :: Pentachord (n.) An order or system of five sounds.
Pentacid :: Pentacid (a.) Capable of neutralizing, or combining with, five molecules of a monobasic acid; having five hydrogen atoms capable of substitution by acid residues; -- said of certain complex bases..
Pentacle :: Pentacle (n.) A figure composed of two equilateral triangles intersecting so as to form a six-pointed star, -- used in early ornamental art, and also with superstitious import by the astrologers and mystics of the Middle Ages..
Pentacoccous :: Pentacoccous (a.) Composed of five united carpels with one seed in each, as certain fruits..
Pentacrostic :: Pentacrostic (n.) A set of verses so disposed that the name forming the subject of the acrostic occurs five times -- the whole set of verses being divided into five different parts from top to bottom.