Definition of formaldehyde in English:

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Pronunciation: /fɔːˈmaldɪhʌɪd/


[mass noun] Chemistry
A colourless pungent gas in solution made by oxidizing methanol.
Example sentences
  • Set on fire, these items release formaldehyde, polyvinyl chloride, and dioxins.
  • They are produced by the polymerization reaction of phenol and formaldehyde.
  • Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment.


Late 19th century: blend of formic acid and aldehyde.

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