sperm-

1.
variant of spermo- before a vowel:
spermine.
British Dictionary definitions for sperm-

spermato-

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

sperm- pref.
Variant of spermi-.