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

Zoon \Zo"["o]n\, n.; pl. {Zoa}. [NL., fr. Gr. zw^,on an animal.]
   (Zo["o]l.)
      (a) An animal which is the sole product of a single egg;
          -- opposed to {zooid}. --H. Spencer.
      (b) Any one of the perfectly developed individuals of a
          compound animal.

资料来源 : WordNet®

zoa
     See {zoon}