n, pl  -pies  :  the existence of a substance and esp. an element in two or more different forms (as of crystals) usu. in the same phase al*lo*trop*ic adj al*lo*trop*i*cal*ly adv 
 
 
 
Similar sounding terms:  al·lo·trope 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.