Late 19th century; earliest use found in American Naturalist. From Byzantine Greek πολυσπερμία abundance of seed, after German Polyspermie. Compare French polyspermie.
Definition of polyspermy in US English:
polyspermy
nounˈpɒlɪspəːmi
Biology
Penetration of an ovum by more than one sperm.
Origin
Late 19th century; earliest use found in American Naturalist. From Byzantine Greek πολυσπερμία abundance of seed, after German Polyspermie. Compare French polyspermie.