WordReference Random House Unabridged Dictionary of American English © 2017
al•de•hyde  (aldə hīd′),USA pronunciation n. [Chem.]
  1. Chemistryany of a class of organic compounds containing the group -CHO, which yields acids when oxidized and alcohols when reduced.
al′de•hydic, adj. 
  • Neo-Latin al(cohol) dehyd(rogenātum) dehydrogenated alcohol
  • 1840–50

Collins Concise English Dictionary © HarperCollins Publishers::

aldehyde /ˈældɪˌhaɪd/ n
  1. any organic compound containing the group -CHO. Aldehydes are oxidized to carboxylic acids and take part in many addition reactions
  2. (modifier) consisting of, containing, or concerned with the group -CHO: aldehyde group or radical
Etymology: 19th Century: from New Latin al(cohol) dehyd(rogenātum) dehydrogenated alcohol

aldehydic /ˌældəˈhɪdɪk/ adj

'aldehyde' also found in these entries:

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