azygos azygos azygos (impar), from the greek άζυξ, refers to an anatomical structure that is unpaired. this is relatively unusual, as most elements of anatomy reflect bilateral symmetry. azygos may refer to: azygos anterior cerebral artery azygos artery of vagina azygos lobe azygos vein ganglion impar look up azygos or azygous in wiktionary, the free dictionary. this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.