Hydrocarbons (and by extension, derivatives formed by substitution) having two double bonds from one carbon atom to two others: R2C=C=CR2. (The simplest member, propadiene, is known as allene.) See also cumulenes, dienes.
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Hydrocarbons (and by extension, derivatives formed by substitution) having two double bonds from one carbon atom to two others: R2C=C=CR2. (The simplest member, propadiene, is known as allene.) See also cumulenes, dienes.
Search the Dictionary