[ al-uh-trohp ]
/ ˈæl əˌtroʊp /

noun Chemistry.

one of two or more existing forms of an element: Graphite and diamond are allotropes of carbon.

Origin of allotrope

First recorded in 1885–90; allo- + -trope Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for allotrope

/ (ˈæləˌtrəʊp) /


any of two or more physical forms in which an element can existdiamond and graphite are allotropes of carbon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for allotrope

[ ălə-trōp′ ]


A structurally differentiated form of an element that exhibits allotropism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for allotrope

[ ălə-trōp′ ]

Any of several crystalline forms of a chemical element. Charcoal, graphite, and diamond are all allotropes of carbon.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.