Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

formaldehyde

play
noun form·al·de·hyde \fȯr-ˈmal-də-ˌhīd, fər-\

Simple Definition of formaldehyde

  • chemistry : a chemical that is used to prevent decay in the dead bodies of people and animals

Source: Merriam-Webster's Learner's Dictionary

Full Definition of formaldehyde

  1. :  a colorless pungent irritating gas CH2O used chiefly in aqueous solution as a disinfectant and preservative and in chemical synthesis

Origin and Etymology of formaldehyde

International Scientific Vocabulary form- + aldehyde


First Known Use: 1872


Medical Dictionary

formaldehyde

play
noun form·al·de·hyde \fȯr-ˈmal-də-ˌhīd, fər-\

Medical Definition of formaldehyde

  1. :  a colorless pungent irritating gas CH2O used chiefly as a disinfectant and preservative and in chemical synthesis





Seen and Heard

What made you want to look up formaldehyde? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

different from the usual or normal

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommadate accomodate acommodate accommodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ