- any of a class of organic compounds containing the group −CHO, which yields acids when oxidized and alcohols when reduced.
Origin of aldehyde
Examples from the Web for aldehyde
In this way the last portion of the aldehyde is absorbed, and the potash solution gradually assumes an amber colour.
Benzoic acid, like the aldehyde, is a natural product which has long been known.Coal
There is no reduction unless an aldehyde is added or unless some boiled extract of a tissue such as liver is added.The Nature of Animal Light
E. Newton Harvey
The value of the oil depends upon its aldehyde content, the chief constituent being cinnamic aldehyde.
Besides methyl salicylate, the oil contains triaconitane, an aldehyde or ketone, and an alcohol.
- any organic compound containing the group -CHO. Aldehydes are oxidized to carboxylic acids and take part in many addition reactions
- (modifier) consisting of, containing, or concerned with the group -CHOaldehyde group or radical
Word Origin and History for aldehyde
first oxidation product of alcohol, 1833, discovered in 1774 by German-born Swedish chemist Carl Wilhelm Scheele (1742-1786), the name said to have been coined by German chemist Justus von Liebig (1803-1873) from abbreviation of Modern Latin alcohol dehydrogenatum "dehydrogenated alcohol."
- 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.
- 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.