spermo-

1.
a combining form of sperm1 , used also with the meaning “seed,” “germ,” “semen,” in the formation of compound words:
spermophyte.
Also, especially before a vowel, sperm-.
British Dictionary definitions for spermo-

spermato-

combining form
1.
indicating sperm: spermatogenesis
2.
indicating seed: spermatophyte
Word Origin
from Greek sperma, spermat-, seed; see sperm1