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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.

The unusually high formaldehyde levels detected by satellites served as evidence that methane breakdown was taking place.

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

Last year, formaldehyde was identified in an FAA-funded study as repeatedly exceeding occupational exposure guidelines even when low amounts of oil mixes into the air supply.

From The Wall Street Journal • Dec. 22, 2025

They’d been placed in formaldehyde because Zanmi Lasante didn’t have the equipment to preserve the specimens in frozen sections.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French




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