Vocabulary What does 固形 (こけい, kokei) mean? 固形 (こけい, kokei) means solid (body). Quick factsReadingこけいRomajikokeiPart of speechnoun, no-adjective 固形こけいkokeisolid (body)1noun · no-adjective solid (body)Also written: 固型Kanji in this word固hard, solid; fixed形shape, form