偏へん微び分ぶん式しきMeaningsNoun1. partial differential equation (Abbreviation)Kanji used偏biased微micro分part式ceremonyComposed of偏へんleft-hand radical of a characterNoun微び分ぶんdifferentiation; differential; derivativeNoun式しきway; style; fashion; method; system; form; type; ceremony; rite; ritual; …Noun