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From Biology-Online Dictionary | Biology-Online Dictionary
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Low sperm count in semen.


A sperm count below 20 million per ml is considered oligozoospermia. Normally, in humans sperm count varies between 20 and 150 million sperm per ml.

Word origin: Greek olígos little, few + -zoo- » zôion, animal + -spermia.

Compare: azoospermia, polyspermia.
See also: sperm count.