POLYPROTODONTA
Pol`y*pro`to*don"ta, n. pl. Etym: [NL., fr. Gr. (Zoöl.)

Defn: A division of marsupials in which there are more fore incisor teeth in each jaw.

POLYPTEROIDEI
Po*lyp`te*roi"de*i, n. pl. Etym: [NL. See Polypterus, and -oid.]
(Zoöl.)

Defn: A suborder of existing ganoid fishes having numerous fins along the back. The bichir, or Polypterus, is the type. See Illust. under Crossopterygian.

POLYPTERUS
Po*lyp`te*rus, n. Etym: [NL., fr. Gr. (Zoöl.)

Defn: An African genus of ganoid fishes including the bichir.

POLYPTOTON
Pol`yp*to"ton, n. Etym: [L., fr. Gr. (Rhet.)

Defn: A figure by which a word is repeated in different forms, cases, numbers, genders, etc., as in Tennyson's line, — "My own heart's heart, and ownest own, farewell."

POLYPUS
Pol"y*pus, n.; pl. E. Polypuses, L. Polypi. Etym: [L. See Polyp.]

1. (Zoöl.)