Also found in: Dictionary, Encyclopedia, Wikipedia.
Lack of secretion or expulsion of semen following ejaculation.
Etymology: Gk, a, sperma, without seed
lack of formation or ejaculation of semen.
Inability to produce or ejaculate semen.
aspermiaThe absence of spermatozoa in the semen or the inability to ejaculate semen. Obstructive aspermia is due to the blockage of the VAS DEFERENS on both sides. This may be congenital or acquired from infection or injury, or from VASECTOMY. CYSTIC FIBROSIS causes aspermia as a result of failure of development of the vas or associated structures.
failure of formation or emission of semen.