IPA: //spɜːrməˈtoʊzuːən//
KK: /spɜrˌmætəˈzoʊən/
A mature male reproductive cell that can fertilize an egg, typically having a head, a neck, and a long tail for movement.
The spermatozoon swims through the female reproductive tract to reach the egg for fertilization.
Spermatozoon → It is formed from "sperma" (from Greek σπέρμα, meaning seed) and "zoon" (from Greek ζῷον, meaning animal or living being). The word "spermatozoon" refers to a seed or male reproductive cell that is a living entity.
Think of 'sperma' meaning seed and 'zoon' meaning living being — together they describe a living seed, which is what a spermatozoon is.