Definition of formaldehyde in English:

formaldehyde

noun

mass nounChemistry
  • A colourless pungent gas in solution made by oxidizing methanol.

    Alternative name: methanal; chemical formula: CH₂O

    • ‘Set on fire, these items release formaldehyde, polyvinyl chloride, and dioxins.’
    • ‘They are produced by the polymerization reaction of phenol and formaldehyde.’
    • ‘The metabolic byproducts of aspartame are methanol and formaldehyde.’
    • ‘Formalin, a solution of formaldehyde, is also used in tanning leather and preserving corpses.’
    • ‘Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment.’

Origin

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

Pronunciation

formaldehyde

/fɔːˈmaldɪhʌɪd/