1) Biological process 2) Fertility medicine 3) Organic process 4) The absence of ovulation 
An anovulatory cycle is a menstrual cycle during which the ovaries do not release an oocyte. Therefore, ovulation does not take place. However, a woman who does not ovulate at each menstrual cycle is not necessarily going through menopause. Chronic anovulation is a common cause of infertility. In addition to the alteration of menstrual periods and...
(from the article `Stein-Leventhal syndrome`) disorder in women that is characterized by an elevated level of male hormones (androgens) and infrequent or absent ovulation (anovulation). About 5 ...
The absence of ovulation. ... (09 Oct 1997) ... 
(an″ov-u-la´shәn) absence of ovulation.
The failure to ovulate; ovulatory failure.
Type: Term Pronunciation: an′ov-ū-lā′shŭn Definitions: 1. Suspension or cessation of ovulation.
Absence of ovulation as a result of a medical condition, drug or menopause. Anovulation is a prime factor in infertility because without if there is no egg to fertilize, conception can not occur. Synonym(s): Ovulatory Failure
[n] - the absence of ovulation due to immaturity or post-maturity or pregnancy or oral contraceptive pills or dysfunction of the ovary
noun the absence of ovulation due to immaturity or post-maturity or pregnancy or oral contraceptive pills or dysfunction of the ovary
the absence of ovulation.
failure of the ovaries to produce or release mature eggs.