Vocabulary What does 幾何学 (きかがく, kikagaku) mean? 幾何学 (きかがく, kikagaku) means geometry. Quick factsReadingきかがくRomajikikagakuPart of speechnoun 幾何学きかがくkikagakugeometry1noun geometryKanji in this word幾how many; some, a few何what学study, learning