aldehyde

[al-duh-hahyd]
noun Chemistry.
any of a class of organic compounds containing the group −CHO, which yields acids when oxidized and alcohols when reduced.

Origin:
1840–50; < Neo-Latin al(cohol) dehyd(rogenātum) dehydrogenated alcohol

aldehydic, adjective
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World English Dictionary
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
 
[C19: from New Latin al(cohol) dehyd(rogenātum) dehydrogenated alcohol]
 
aldehydic
 
adj

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American Heritage
Medical Dictionary

aldehyde al·de·hyde (āl'də-hīd')
n.

  1. Any of a class of reactive organic chemical compounds obtained by oxidation of primary alcohols, characterized by the common group CHO, and used in the manufacture of resins, dyes, and organic acids.

  2. See acetaldehyde.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
aldehyde   (āl'də-hīd')  Pronunciation Key 
Any of a class of highly reactive organic compounds obtained by oxidation of certain alcohols and containing the group CHO. Aldehydes are used in manufacturing resins, dyes, and organic acids.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for aldehydes
Sweetness is often connected to aldehydes and ketones, which contain a carbonyl group.
Cyclic aldehydes are aldehydes that have their cho group bonded directly to the ring.
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