動どう脈みゃく管かんどうみゃくかんMeanings1nounarterial duct; ductus arteriosusanatomyAnatomical term for a fetal blood vessel connecting the pulmonary artery to the aorta; normally closes after birth.動どう脈みゃく管かんは出しゅっ生しょう後ごすぐに閉へい鎖さする。The ductus arteriosus closes soon after birth.