资料来源 : Webster's Revised Unabridged Dictionary (1913)

Polygastrica \Pol`y*gas"tri*ca\ (-tr[i^]*k[.a]), n. pl. [NL. So
   called because they were supposed to have several stomachs,
   or digestive cavities.] (Zo["o]l.)
   The Infusoria. [Obs.]