The Collaborative International Dictionary of English v.0.48:
Azygous \Az"y*gous\, a. [Gr. ?; 'a priv. + ? yoke.] Odd; having no fellow; not one of a pair; single; as, the azygous muscle of the uvula. [1913 Webster] AzymWordNet (r) 3.0 (2006):
azygous adj 1: occurring singly; not one of a pair; "the azygous muscle of the uvula" [syn: azygous, azygos]