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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.

Using satellite observations, scientists detected unusually high levels of formaldehyde inside the enormous volcanic plume created by the eruption.

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

Given a moist planet with methane, formaldehyde, ammonia, and some usable minerals, all of which abound, exposed to lightning or ultraviolet irradiation at the right temperature, life might start off almost anywhere.

From "The Lives of a Cell" by Lewis Thomas