Azoospermia is the medical condition of a man not having any measurable level of sperm in his semen. It is associated with very low levels of fertility or even sterility, but many forms are amenable to medical treatment. In humans, azoospermia affects about 1% of the male population and may be seen in up to 20% of male infertility situations. ==Cl...
(a neg. + zoosperm) absence of spermatozoa in the semen, or failure of formation of spermatozoa.
The complete absence of sperms in ejaculated semen; one cause of male-factor infertility. Usually due to failure of production of sperms by the testis or to obstruction of the tubing along which sperms normally pass
<gynaecology, urology> The absence of spermatozoa in the semen or failure of formation of spermatozoa. ... (18 Nov 1997) ... 
(a-zo″ә-spur´me-ә) lack of live spermatozoa in the semen; see also aspermatogenesis.
Semen containing no sperm, either because the testicles cannot make sperm or because of a blockage in the reproductive tract.
Type: Term Pronunciation: ā′zō-ō-sper′mē-ă Definitions: 1. Absence of living spermatozoa in the semen; failure of spermatogenesis.
Azoospermia: No sperm at all. The ejaculate is completely devoid of sperm. By contrast, in oligospermia (literally, few sperm) there are some sperm, but fewer than normal.
azoospermia Absence of living spermatozoa in the semen.
The complete absence of sperm in an ejaculate.The complete absence of sperm in the ejaculate.