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Definitions

formaldehyde

[fawr-mal-duh-hahyd, fer-] / fɔrˈmæl dəˌhaɪd, fər- /
NOUN
preservative
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

That discovery immediately caught their attention because formaldehyde is produced when methane breaks down in the atmosphere.

From Science Daily • May 10, 2026

The suit claims xAI’s 27 turbines emit nitrogen oxides and formaldehyde, linked to asthma, heart problems, and cancers.

From Barron's • Apr. 14, 2026

Composite wood products can be bound with formaldehyde.

From BBC • Mar. 16, 2026

The 2008 auction included more than 200 works by Hirst, from animals in formaldehyde tanks to polka-dot-covered canvases.

From The Wall Street Journal • Nov. 22, 2025

With no time for embalming, they brush the dead with formaldehyde from buckets.

From "Out of Darkness" by Ashley Hope Pérez