A man who donates sperm, usually anonymously, to a sperm bank or fertility clinic.

plural of sperm cell

The number of spermatozoa in a given amount of ejaculate (typically one millilitre), often used as a gauge of male fertility.

whale oil from a sperm whale

plural of sperm-blossom (an alternative form of sperm blossom).

Alternative form of sperm blossom

(humorous, derogatory, rare) A child; one’s offspring.

plural of sperm blossom

plural of sperm donor

plural of sperm morula