noun, plural: spermatogonia
(2) A male gametogonium.
In the early stages of spermatogenesis, the undifferentiated male germ cells (spermatogonia) divide mitotically and give rise to new spermatogonia. Some of the spermatogonia carry on the next stages to become spermatocytes, which in turn differentiate into mature sperm cells.
Word origin: Greek, from sperma, spermat- (seed) + -gonium, seed, cell (from Greek gonos, seed).