密みつ結けつ合ごうMeaningsNoun1. tight couplingKanji used密intimate結tied together合come togetherComposed of密みつdense; thick; crowded; close (relationship); intimate; minute; fine; careful; secret; esoteric Buddhism; …Na-adjective結けつ合ごうcombination; union; joining; linking; coupling; bond; join (in relational algebra)Noun