allene

== English == === Pronunciation === IPA(key): /ˈæliːn/ === Noun === allene (plural allenes) (organic chemistry) Any of a class of hydrocarbons having two double bonds from one carbon atom to two others - R2C=C=CR2; especially the parent compound CH2=C=CH2 (propadiene). (organic chemistry) Any derivative of such hydrocarbons. ==== Derived terms ==== ==== Translations ==== ==== See also ==== cumulene == Italian == === Pronunciation === IPA(key): /alˈlɛ.ne/ Rhymes: -ɛne Hyphenation: al‧lè‧ne === Noun === allene m (plural alleni) (organic chemistry) allene === Anagrams === ellena == Middle Dutch == === Etymology === From al +‎ êne. === Adverb === allêne only, just ==== Alternative forms ==== alleine (Limburgish) ==== Descendants ==== Dutch: alleen Limburgish: allein === Further reading === “allene (II)”, in Vroegmiddelnederlands Woordenboek, 2000 Verwijs, E.; Verdam, J. (1885–1929), “allene (II)”, in Middelnederlandsch Woordenboek, The Hague: Martinus Nijhoff, →ISBN, page II