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• n  the male reproductive cell; the male gamete

• If the spermatozoon has a male-determining chromosome pattern in its nucleus, the sex will be male; if not, female.
• But when a gamma ray hits the nucleus of a spermatozoon or ovum (the reproductive cells which unite to form a new individual), it may damage one of the thousands of "genes" which .
• Art (for "assisted reproductive techniques") is the first success in a pioneering in-vitro fertilization program where a frozen spermatozoon is thawed, then injected into an egg .

• sperm
• sperm cell
• spermatozoan