The Collaborative International Dictionary of English v.0.48:
gynaecology \gynaecology\ n. The branch of medicine that deals with the diseases and hygiene of women; same as gynecology. Syn: gynecology. [WordNet 1.5]WordNet (r) 3.0 (2006):
gynaecology n 1: the branch of medicine that deals with the diseases and hygiene of women [syn: gynecology, gynaecology]