allene

• IPA^(key): /ˈæliːn/

• Audio (Southern England):

  (file)

allene (plural allenes)

1. (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).
2. (organic chemistry) Any derivative of such hydrocarbons.

• cumulene

• IPA^(key): /alˈlɛ.ne/
• Rhymes: -ɛne
• Hyphenation: al‧lè‧ne

allene m (plural alleni)

1. (organic chemistry) allene

• ellena

From al +‎ êne.

allêne

1. only, just

• alleine (Limburgish)

• Dutch: alleen
• Limburgish: allein

• “allene (II)”, in Vroegmiddelnederlands Woordenboek, 2000
• Verwijs, E., Verdam, J. (1885–1929) “allene (II)”, in Middelnederlandsch Woordenboek, The Hague: Martinus Nijhoff, →ISBN, page II