Oligospermia

n. scarcity of sperm (Medicine)

Oligospermia, also known as Oligozoospermia, is a medical symptom affecting men. It is defined as having less than 20 million spermatozoa per ml of ejaculate. Oligospermia has many different causes, as many different medical conditions can reduce sperm concentration. The effects of these causes may be temporary or permanent.
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Oligospermia /ol·i·go·sper·mia/ decreased number of spermatozoa in the semen. ol·i·go·sper·mi·a n. A subnormal concentration of spermatozoa in the [more]Oligospermia - Community and Resources

Noun
1. insufficient spermatozoa in the semen
(hypernym) physiological state, physiological condition

n. oligospermia, scarcity of sperm (Pathology)