Noun
the male reproductive cell; the male gamete
Source: WordNetAlthough each egg cell produced by a woman carries a single X chromosome, the sperm cells produced by a man carry either an X or a Y. This means, in very simple terms, that the sperm cell determines a baby's sex. Kenneth R. Miller
a sperm is mostly a nucleus surrounded by little other cellular material Source: Internet
Humans In human fertilization, two 1n haploid cells—an ovum ( female gamete) and a sperm cell ( male gamete)—combine to form a single 2n diploid cell called the zygote. Source: Internet
The nucleus of the other sperm cell fuses with two haploid polar nuclei (contained in the central cell) in the centre of the gametophyte. Source: Internet
The second sperm cell fuses with both central cell nuclei, producing a triploid (3n) cell. Source: Internet
The egg " activates " itself upon fusing with a single sperm cell and thereby changes its cell membrane to prevent fusion with other sperm. Source: Internet