noun, noun or participle which takes 'suru', intransitive verb
release of sperm; sperm release
Zoological term for the release of sperm by fish, amphibians, and similar animals. Used as a noun or with する as an intransitive verb.
サケの放精は秋に行われる。
The release of sperm in salmon occurs in autumn.
オスが放精した後
After the male releases sperm, the female lays eggs.