Definition of "allotrope" []

• A structurally differentiated form of an element that exhibits allotropy. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Carbon nanotubes are molecular-scale tubes usually made of a carbon allotrope."
• "Moving to polytopes or allotrope seem to have values in science?"
• "Buckminister Fuller and Richard Smalley in terms of allotrope."