Definition of allotrope in English:

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Pronunciation: /ˈaləˌtrōp/


Each of two or more different physical forms in which an element can exist. Graphite, charcoal, and diamond are all allotropes of carbon.
Example sentences
  • Two allotropes of the element exist, accounting for the slight variation in densities.
  • Each of these allotropes of phosphorous also has its own subset of forms.
  • A third allotrope occurs as an amorphous brown powder with a density of 2.350 grams per cubic centimeter.


Late 19th century: back-formation from allotropy.

For editors and proofreaders

Syllabification: al·lo·trope

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