資料來源 : Webster's Revised Unabridged Dictionary (1913)

Prosoma \Pro*so"ma\, n.; pl. {Prosomata}. [NL., fr. Gr. ? before
   + ?, ?, body.] (Zo["o]l.)
   The anterior of the body of an animal, as of a cephalopod;
   the thorax of an arthropod.