n.
The existence, especially in the solid state, of two or more crystalline or molecular structural forms of an element.
allotropic al'lo·trop'ic (ăl'ə-trŏp'ĭk, -trō'pĭk) or al'lo·trop'i·cal adj.
allotropically al'lo·trop'i·cal·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
