al·​lo·​trope ˈa-lə-ˌtrōp How to pronounce allotrope (audio)
: a form showing allotropy

Examples of allotrope in a Sentence

Recent Examples on the Web In 1955, however, labs at General Electric built on earlier research to create diamonds from graphite, another carbon allotrope, that had been subjected to extremes of pressure (nearly 1 million pounds per square inch) and temperature (3,100 degrees Fahrenheit). Gemma Tarlach, Discover Magazine, 5 Apr. 2018 And now, according to a paper today in Science, a team of researchers in Europe has succeeded in creating a strange new allotrope: an 18-carbon ring that had eluded labs for decades. Bill Andrews, Discover Magazine, 14 Aug. 2019 Graphene is a super material and an allotrope of carbon that’s made up of a layer of atoms arranged in a two-dimensional honeycomb nanostructure. Mark Sparrow, Forbes, 10 Nov. 2021 Therrien is bullish about the long-term potential of geometrical frustration to synthesize novel allotropes of carbon and other elements. W. Wayt Gibbs, Science | AAAS, 12 Nov. 2019 Altogether, then, this allotrope of carbon looks likely to have a profitable future. The Economist, 5 Oct. 2019 More Biology and Tech The e-tattoo is built from the thermoplastic polyvinylidene fluoride and graphene, which is an allotrope of carbon that's 100 times stronger than steel. Daisy Hernandez, Popular Mechanics, 26 June 2019 In the next step, the carbon ashes are converted into graphite, a stable allotrope of carbon in which the atoms are packed into tight, flat sheets. Glenn McDonald, National Geographic, 17 June 2019 What makes us human is doubt, fear, and shame, all the allotropes of unworthiness. Tad Friend, The New Yorker, 7 May 2018 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'allotrope.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


allo- + -trope, after allotropy

First Known Use

1833, in the meaning defined above

Time Traveler
The first known use of allotrope was in 1833

Dictionary Entries Near allotrope

Cite this Entry

“Allotrope.” Dictionary, Merriam-Webster, Accessed 1 Dec. 2023.

Medical Definition


al·​lo·​trope ˈal-ə-ˌtrōp How to pronounce allotrope (audio)
: a form showing allotropy
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