From Wiktionary, the free dictionary
From extra- + ovarian.
extraovarian (not comparable)
- Outside the ovary.
2015 December 4, “Non-Invasive Pregnancy Diagnosis in Big Cats using the PGFM (13,14-dihydro-15-keto-PGF 2α ) Assay”, in PLOS ONE[1], →DOI:At mid-pregnancy, feline CLs require extraovarian luteotropic signals which most likely come from the placenta.