1. (Anat.)
Defn: Having several bellies; — applied to muscles which are made up of several bellies separated by short tendons.
2. (Zoöl.)
Defn: Pertaining to the Polygastrica. [Obs.]
POLYGASTRIC
Pol`y*gas"tric, n. (Zoöl.)
Defn: One of the Polygastrica.
POLYGASTRICA Pol`y*gas"tri*ca, n. pl. Etym: [NL. So called because they were supposed to have several stomachs, or digestive cavities.] (Zoöl.)
Defn: The Infusoria. [Obs.]
POLYGENESIS; POLYGENY
Pol`y*gen"e*sis, Po*lyg"e*ny, n. Etym: [Poly- + genesis, or root of
Gr. (Biol.)
Defn: The theory that living organisms originate in cells or embryos of different kinds, instead of coming from a single cell; — opposed to monogenesis.