any of two or more physical forms in which an element can exist
WordReference Random House Unabridged Dictionary of American English © 2025
al•lo•trope
(al′ə trōp′),USA pronunciation n. [Chem.]
- Chemistryone of two or more existing forms of an element:Graphite and diamond are allotropes of carbon.
- allo- + -trope 1885–90
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