どういつへいめん 同一平面 LinksSentence search for 同一平面Sentence search for どういつへいめんKanji details for 同, 一, 平 and 面Edit in JMdict Noun1. same plane; same levelNoun which may take the genitive case particle 'no'2. flush (with); even (with) Discussions Log in to talk about this word.