固体こたい Common Noun Noun English jmdict 1 noun (common) (futsuumeishi)nouns which may take the genitive case particle 'no' solid (body);solid matter;solid-state See also: 液体 (えきたい), 気体 (きたい) 固体が解けると液体になる。 When a solid melts, it becomes liquid.
Shirabe