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Webster 1913 Edition
Spermatozoid
Sperˊma-to-zo′id
,Noun.
[
Spermatozoon
+ Gr. εἶδοσ
form.] (Biol.)
The male germ cell in animals and plants, the essential element in fertilization; a microscopic animalcule-like particle, usually provided with one or more cilia by which it is capable of active motion. In animals, the familiar type is that of a small, more or less ovoid head, with a delicate threadlike cilium, or tail. Called also
spermatozoon
. In plants the more usual term is antherozoid
.