or al·lot·ro·pism

[ uh-lo-truh-pee ]
/ əˈlɒ trə pi /

noun Chemistry.

a property of certain elements, as carbon, sulfur, and phosphorus, of existing in two or more distinct forms; allomorphism.

Origin of allotropy

First recorded in 1840–50; allo- + -tropy Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for allotropy

British Dictionary definitions for allotropy



/ (əˈlɒtrəpɪ) /


the existence of an element in two or more physical forms. The most common elements having this property are carbon, sulphur, and phosphorus

Derived Forms

allotropic (ˌæləˈtrɒpɪk), adjectiveallotropically, adverb
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