Source : Webster's Revised Unabridged Dictionary (1913)

Anisometric \An`i*so*met"ric\, a. [Gr. 'an priv. + E.
   isometric.]
   Not isometric; having unsymmetrical parts; -- said of
   crystals with three unequal axes. --Dana.

Source : WordNet®

anisometric
     adj : having unsymmetrical parts or unequal dimensions or
           measurements [syn: {unsymmetrical}]