allene

noun

al·​lene
ˈaˌlēn
plural -s
1
: a gaseous hydrocarbon CH2=C=CH2

called also propadiene, sym-allylene

2
: a diolefin with its two double bonds in adjacent positions

Word History

Etymology

International Scientific Vocabulary, contraction of allylene

First Known Use

1875, in the meaning defined at sense 1

Time Traveler
The first known use of allene was in 1875

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Cite this Entry

“Allene.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/allene. Accessed 19 Jun. 2024.

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