[spur-mat-uh-zoh-uhn, -on, spur-muh-tuh-]
noun, plural spermatozoa [spur-mat-uh-zoh-uh, spur-muh-tuh-] . Cell Biology.
one of the minute, usually actively motile gametes in semen, which serve to fertilize the ovum; a mature male reproductive cell.

1830–40; < Neo-Latin; see spermato-, -zoon

spermatozoal, spermatozoan, spermatozoic, adjective
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World English Dictionary
spermatozoon (ˌspɜːmətəʊˈzəʊɒn)
n , pl -zoa
sperm, Also called: zoosperm any of the male reproductive cells released in the semen during ejaculation, consisting of a flattened egg-shaped head, a long neck, and a whiplike tail by which it moves to fertilize the female ovum

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American Heritage
Medical Dictionary

spermatozoon sper·mat·o·zo·on (spər-māt'ə-zō'ŏn', -ən, spûr'mə-tə-)
n. pl. sper·mat·o·zo·a (-zō'ə)
The mature male gamete or sex cell that consists of a cylindrical nucleated cell with a short neck and a thin motile tail, contains genetic information to be transmitted by the male, exhibits autokinesia, and is able to effect zygosis with an ovum; sperm.

sper·mat'o·zo'al (-zō'əl) or sper·mat'o·zo'an (-zō'ən) or sper·mat'o·zo'ic (-zō'ĭk) adj.
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Science Dictionary
spermatozoon   (spər-māt'ə-zō'ŏn')  Pronunciation Key 
Plural spermatozoa
A sperm cell produced in the testis of an animal.
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