the male germ cell, found in semen, which penetrates the ovum, or egg, of the female to fertilize it: typically it consists of a head containing a large nucleus, a small midsection, and a whiplike tail used for locomotion
Origin of spermatozoonModern Latin ; from spermato- + Classical Greek zōion, animal: see bio-
The mature male gamete of an animal, usually consisting of a nucleate head, a short neck, and a thin motile tail.
- sper·mat′o·zo′al , sper·mat′o·zo′an , sper·mat′o·zo′ic
From Ancient Greek σπέρμα (sperma, “sperm”) + ζῷον (zōon, “living thing”).