Definition of formaldehyde in English:


Syllabification: form·al·de·hyde
Pronunciation: /fôrˈmaldəˌhīd, fər-


A colorless pungent gas in solution made by oxidizing methanol.
  • Alternative name: methanal; chemical formula: CH2O
More 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.

Definition of formaldehyde in:

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Word of the day ween
Pronunciation: wēn
be of the opinion; think or suppose