Aldehyde

n. chemical compound which can be converted into acid and alcohol

An aldehyde is an organic compound containing a terminal carbonyl group. This functional group, which consists of a carbon atom which is bonded to a hydrogen atom and double-bonded to an oxygen atom (chemical formula O=CH-), is called the aldehyde group. The aldehyde group is also called the formyl or methanoyl group.
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Aldehyde /al·de·hyde/ 1. any of a class of organic compounds containing the group —CHO, i.e., one with a carbonyl group located at one end of the [more]Aldehyde - Community and Resources

Noun
1. any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids
(hypernym) organic compound
(hyponym) paraldehyde, ethanal trimer

n. aldehyde, chemical compound which can be converted into acid and alcohol