Search Result for "allomerism": 
Wordnet 3.0

NOUN (1)

1. (chemistry) variability in chemical composition without variation in crystalline form; 



The Collaborative International Dictionary of English v.0.48:

Allomerism \Al*lom"er*ism\, n. [Gr. ? other + ? part.] (Chem.)
   Variability in chemical constitution without variation in
   crystalline form.
   [1913 Webster]


WordNet (r) 3.0 (2006):

allomerism
    n 1: (chemistry) variability in chemical composition without
         variation in crystalline form