disorder of ovulation anovulation http://id.loc.gov/authorities/subjects/sh85005465 http://purl.bioontology.org/ontology/MEDDRA/10002658 http://purl.bioontology.org/ontology/MESH/D000858 http://purl.bioontology.org/ontology/SNOMEDCT/34571000 http://purl.obolibrary.org/obo/DOID_3781 http://purl.obolibrary.org/obo/NCIT_C34388 https://en.wikipedia.org/wiki/Anovulation https://www.wikidata.org/wiki/Q25556 RG444 Absence of ovulation when it would be normally expected (in a post-menarchal, premenopausal person). Anovulation usually manifests itself as irregularity of menstrual periods, that is, unpredictable variability of intervals, duration, or bleeding. Anovulation can also cause cessation of periods (secondary amenorrhea) or excessive bleeding (dysfunctional uterine bleeding). Suspension or cessation of ovulation in animals or humans with follicle-containing ovaries (ovarian follicle). Depending on the etiology, ovulation may be induced with appropriate therapy. The absence of ovulation. The Complete Dictionary of Sexology