How many letters does the top answer for “the branch of medicine that deals with the diseases and hygiene of women” have?

The most common answer is gynaecology (11 letters).

Crossword clue: the branch of medicine that deals with the diseases and hygiene of women

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

gynaecology 11 letters wn-def

the branch of medicine that deals with the diseases and hygiene of women

gynecology 10 letters wn-def

the branch of medicine that deals with the diseases and hygiene of women