transcription, транскрипция: [ ˈe-thə-ˌlēn ]
noun
Date: circa 1852
1. : a colorless flammable gaseous unsaturated hydrocarbon C 2 H 4 that is found in coal gas, can be produced by pyrolysis of petroleum hydrocarbons, and occurs in plants functioning especially as a natural growth regulator that promotes the ripening of fruit
2. : a divalent hydrocarbon group C 2 H 4 derived from ethane
• eth·yl·enic ˌe-thə-ˈlē-nik, -ˈle-nik adjective