下か行こう大だい動どう脈みゃくMeaningsNoun1. descending aortaKanji used下below行go大large動move脈veinComposed of下かunder (influence, control, conditions, etc. of); during (war, occupation, etc.)Suffix行こうgoing; travelling; traveling; journey; trip; act; action; bank; counter for banks; counter for groups or parties of people; …Noun大だい動どう脈みゃくaorta; important traffic routeNoun