Definition of pentyne in US English:

pentyne

(also pentine)

noun

Chemistry
  • Originally: any of a number of unsaturated hydrocarbons with the formula C₅H₈. Now specifically: an alkyne with this formula, especially (also 1-"pentyne") the unbranched isomer CH≡CCH₂CH₂CH₃.

Origin

Late 19th century; earliest use found in Henry Watts (1815–1884), chemist. From penta- + -yne.

Pronunciation

pentyne

/ˈpɛntʌɪn/