We don't have synonyms for allene yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are allege, allele and alkene.
(n) :
(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).
(n) :
(organic chemistry) Any derivative of such hydrocarbons.
(n) :
(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).
(n) :
(organic chemistry) Any derivative of such hydrocarbons.