PENTATEUCH
Pen"ta*teuch, n. Etym: [L. pentateuchus, Gr. Penta-) + text. See
Five, and Text.]
Defn: The first five books of the Old Testament, collectively; — called also the Law of Moses, Book of the Law of Moses, etc.
PENTATEUCHAL
Pen`ta*teu"chal, a.
Defn: Of or pertaining to the Pentateuch.
PENTATHIONIC
Pen`ta*thi*on"ic, a. Etym: [Penta- + thionic.] (Chem.)
Defn: Pertaining to, or designating, an acid of sulphur obtained by leading hydrogen sulphide into a solution of sulphur dioxide; — so called because it contains five atoms of sulphur.
PENTATHLON
Pen*tath"lon, n. Etym: [NL., fr. Gr. (Gr. Antiq.)
Defn: A fivefold athletic performance peculiar to the great national games of the Greeks, including leaping, foot racing, wrestling, throwing the discus, and throwing the spear.
PENTATOMIC Pen`ta*tom"ic, a. Etym: [Penta- + atomic.] (Chem.) (a) Having five atoms in the molecule. (b) Having five hydrogen atoms capable of substitution.
PENTAVALENT
Pen*tav"a*lent, a. Etym: [Penta- + L. valens, p. pr. See Valence.]
(Chem.)