allene

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English[edit]

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Noun[edit]

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.

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Italian[edit]

Noun[edit]

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allene m (plural alleni)

  1. (organic chemistry) allene