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
Come for the 21-free formula absent of potentially harmful ingredients like formaldehyde, camphor, and DHP; stay for the incredibly smooth application.
—
Taryn Brooke, Glamour, 16 Dec. 2025
His team found additives like borax in meat to disguise spoilage, formaldehyde added to milk, and coal-tar dyes used in candy, all of which posed serious health risks.
—Ben Baumann, IndyStar, 5 Dec. 2025
Many of these products are essentially plastic dishes made from melamine-formaldehyde resin containing bamboo filler.
—Hannah Millington, MSNBC Newsweek, 14 Nov. 2025
On safety and environment, Li said the company’s fermentation and formulations avoid aniline, formaldehyde, and heavy metals.
—Angela Velasquez, Sourcing Journal, 11 Nov. 2025
See All Example Sentences for formaldehyde
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Taryn Brooke, Glamour, 16 Dec. 2025
His team found additives like borax in meat to disguise spoilage, formaldehyde added to milk, and coal-tar dyes used in candy, all of which posed serious health risks.
—Ben Baumann, IndyStar, 5 Dec. 2025
Many of these products are essentially plastic dishes made from melamine-formaldehyde resin containing bamboo filler.
—Hannah Millington, MSNBC Newsweek, 14 Nov. 2025
On safety and environment, Li said the company’s fermentation and formulations avoid aniline, formaldehyde, and heavy metals.
—Angela Velasquez, Sourcing Journal, 11 Nov. 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 19 Dec. 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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