研けん究きゅう課か題だいMeaningsNoun1. research taskKanji used研refine究research課subsection題topicComposed of研けん究きゅうresearch; study; investigationNoun課か題だいsubject; theme; issue; matter; homework; assignment; problem (that needs solving); task; challenge; question; …NounExamples1あなたは研けん究きゅう課か題だいを二ふたつ落おとした、すぐにやり直なおさなければならない。You missed two assignments; you will have to make them up at once.