上うえ三さん角かく行ぎょう列れつMeaningsNoun1. upper triangular matrixKanji used上above三three角angle行go列rowComposed of上うえabove; over; up; top; summit; upper part; head (e.g. of a staircase); surface; on (top of); the above (in a piece of writing); …Noun三さん角かくtriangle; triangular shapeNoun行ぎょう列れつline; queue; procession; parade; matrixNoun