ethinyl

noun

variants or less commonly ethynyl
: a monovalent unsaturated radical HC≡C− derived from acetylene by removal of one hydrogen atom

Example Sentences

Recent Examples on the Web One environmental estrogen is ethinyl estradiol—a chemical found in birth control pills. National Geographic, 3 Feb. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ethinyl.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

ethine ethyne + -yl

First Known Use

1867, in the meaning defined above

Time Traveler
The first known use of ethinyl was in 1867

Dictionary Entries Near ethinyl

Cite this Entry

“Ethinyl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ethinyl. Accessed 8 Dec. 2022.

Medical Definition

ethinyl

noun
ethi·​nyl
variants also ethynyl
e-ˈthīn-ᵊl, ˈeth-ə-ˌnil
: a monovalent unsaturated radical HC≡C− derived from acetylene by removal of one hydrogen atom
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