azygous

from WordNet (r) 3.0 (2006)

azygous
    adj 1: occurring singly; not one of a pair; "the azygous muscle
           of the uvula" [syn: {azygous}, {azygos}]

from 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] Azym