spermatoal

from The Collaborative International Dictionary of English v.0.48

Spermatoon \Sper`ma*to"on\, n.; pl. {Spermatoa}. [NL., fr. Gr.
   spe`rma, -atos, seed + ??? an egg.] (Anat.)
   A spermoblast. -- {Sper`ma*to"al}, a. --Owen.
   [1913 Webster]