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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. ethynyl

from The Century Dictionary and Cyclopedia

  • n. A term used in composition, indicating that a compound contains the group CH:C, derived from acetylene (C2H2), as acetenylbenzene, C6H5C:CH. It has also been erroneously used to designate the group CH2:CH, styrene (C6H5CH:CH2) having also been called acetenylbenzene.


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