\Par*nas"sian\, a. [L. Parnassius.]
Of or pertaining to Parnassus.

\Par*nas"sian\, n. [See {Parnassus}.] (Zo["o]l.)
Any one of numerous species of butterflies belonging to the
genus {Parnassius}. They inhabit the mountains, both in the
Old World and in America.

\Par*nas"sian\, n. [F. parnassien.]
One of a school of French poets of the Second Empire
(1852-70) who emphasized metrical form and made the little
use of emotion as poetic material; -- so called from the name
(Parnasse contemporain) of the volume in which their first
poems were collected in 1866.