Definition of aldehyde in English:

aldehyde

noun

Chemistry
  • An organic compound containing the group —CHO, formed by the oxidation of alcohols. Typical aldehydes include methanal (formaldehyde) and ethanal (acetaldehyde).

    • ‘The fumes also contain sulfur dioxide, and various aldehydes, primarily formaldehyde as well as acetaldehyde and acrolein.’
    • ‘Oxidation of an aldehyde breaks the double bond within the carbonyl group to give a carboxylic acid.’
    • ‘Over time, however, it oxidizes and chemically degrades to form alcohols, ketones, aldehydes, acids and esters.’
    • ‘Water, ethanol, volatile organic acids, aldehydes, esters, acetals, and ketones, many of them powerfully aromatic, are among the azeotrope components in wines.’
    • ‘Included among these compounds are some of the best known of all chemical families, including the hydrocarbons, alcohols, ethers, aldehydes and ketones, and organic acids.’

Origin

Mid 19th century: shortened from Latin alcohol dehydrogenatum alcohol deprived of hydrogen.

Pronunciation:

aldehyde

/ˈaldɪhʌɪd/