Alkyne

Part of speech: noun

Pronunciation: /ælˈkʰaɪn/

Definitions

1. An organic compound known for containing at least one carbon-carbon triple bond, which classifies it as an unsaturated hydrocarbon
2. A chemical species distinguished by the presence of a triple bond between carbon atoms, categorizing it within unsaturated hydrocarbons
3. A type of organic molecule characterized by having one or more carbon atoms connected through triple bonds, placing it in the category of unsaturated hydrocarbons

Etymology: Alkyne is a compound coinage, built from two chemical building blocks rather than from a single ancient word. Its first half, "alk-", comes from "alcohol," which traces back through Medieval Latin "alcohol" and Arabic "kuḥl," a fine powder used as eyeliner. Chemists took that shared "alc-" piece and used it to name a family of organic compounds, the alkyls, and the "-yne" ending was then added to mark the triple bond. The suffix has its own history. "-yl" was introduced into chemistry as a name for radical groups, and it was joined to the "alk-" stem to form "alkyl." The "-yne" ending was then borrowed on the pattern of "-ene," the ending used for double-bonded compounds, so that "alkyne" would signal a triple bond in its name.

Synonyms: hydrocarbon