POLYGONUM
Po*lyg"o*num, n. Etym: [NL., fr. Gr. (Bot.)
Defn: A genus of plants embracing a large number of species, including bistort, knotweed, smartweed, etc.
POLYGONY
Po*lyg"o*ny, n. (Bot.)
Defn: Any plant of the genus Polygonum.
POLYGORDIUS
Pol`y*gor"di*us, n. Etym: [NL. See Poly-, and Gordius.] (Zoöl.)
Defn: A genus of marine annelids, believed to be an ancient or ancestral type. It is remarkable for its simplicity of structure and want of parapodia. It is the type of the order Archiannelida, or Gymnotoma. See Loeven's larva.
POLYGRAM
Pol"y*gram, n. Etym: [Gr.
Defn: A figure consisting of many lines. [R.] Barlow.
POLYGRAPH
Pol"y*graph, n. Etym: [Gr. polygraphe.]
1. An instrument for multiplying copies of a writing; a manifold writer; a copying machine.