← BackshareGuessazygous/ˈeɪzɪɡəs/adjectiveSingle or unpaired; not one of a pair, especially in anatomy.The doctor noted an azygous artery in the patient's chest.The azygous vein is an example of an azygous structure.Some muscles in the body are azygous, like the tongue.SynonymssingleunpairedAntonymspaired