四よん色しょく定てい理りMeaningsNoun1. four-color theorem; four-color map theoremOther readings四し色しょく定てい理りKanji used四four色color定define理logicComposed of四よんfour; 4Numeric色しょくcounter for colours; color; colour; colouring; (outward) appearance; look; air; manner; (facial) expression; face; …Counter定てい理りtheoremNoun