formaldehyde
noun
form·al·de·hyde
fȯr-ˈmal-də-ˌhīd 
fər-
: a colorless pungent irritating gas CH2O used chiefly in aqueous solution as a disinfectant and preservative and in chemical synthesis
Examples of formaldehyde in a Sentence
Recent Examples on the Web
Healthcare workers are frequently exposed to formaldehyde in laboratories and medical settings.
—
John F. McQuillan, Forbes, 21 Mar. 2025
After experimenting with a range of materials, the scientists created nano-sized plastic beads made from melamine and formaldehyde.
—Michael Franco, New Atlas, 16 Mar. 2025
These include volatile organic compounds such as formaldehyde, air pollutants such as nitrogen dioxide, consumer chemicals such as bisphenol A, and herbicides such as atrazine.
—Brad Reisfeld, The Conversation, 12 Mar. 2025
In addition to smoke and soot, the space agency detected large plumes of harmful gases emanating from the wildfires, including lung-irritating nitrogen dioxide and cancer-causing formaldehyde.
—Tony Briscoe, Los Angeles Times, 16 Jan. 2025
See All Example Sentences for formaldehyde
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John F. McQuillan, Forbes, 21 Mar. 2025
After experimenting with a range of materials, the scientists created nano-sized plastic beads made from melamine and formaldehyde.
—Michael Franco, New Atlas, 16 Mar. 2025
These include volatile organic compounds such as formaldehyde, air pollutants such as nitrogen dioxide, consumer chemicals such as bisphenol A, and herbicides such as atrazine.
—Brad Reisfeld, The Conversation, 12 Mar. 2025
In addition to smoke and soot, the space agency detected large plumes of harmful gases emanating from the wildfires, including lung-irritating nitrogen dioxide and cancer-causing formaldehyde.
—Tony Briscoe, Los Angeles Times, 16 Jan. 2025
See All Example Sentences for formaldehyde
Cite this Entry
“Formaldehyde.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/formaldehyde. Accessed 20 Apr. 2025.
Copy CitationKids Definition
formaldehyde
noun
form·al·de·hyde
fȯr-ˈmal-də-ˌhīd
fər-
: a colorless gas that consists of carbon, hydrogen, and oxygen, has a sharp irritating odor, and when dissolved in water is used to disinfect or to prevent decay
Medical Definition
formaldehyde
noun
form·al·de·hyde
fȯr-ˈmal-də-ˌhīd, fər-
: a colorless pungent irritating gas CH2O used chiefly as a disinfectant and preservative and in chemical synthesis
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