AZYGOUS Meaning of AZYGOUS in English [ 'azɪgəs ]■ adjective Anatomy & Biology (of an organic structure) not existing in pairs; single.OriginC19: from Gk azugos , from a- 'without' + zugon 'yoke', + -ous . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004