aldehyde

noun

al·​de·​hyde ˈal-də-ˌhīd How to pronounce aldehyde (audio)
: acetaldehyde
broadly : any of a class of highly reactive organic compounds that are analogous to acetaldehyde and characterized by a carbonyl group attached to a hydrogen atom
aldehydic adjective

Examples of aldehyde in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
What to look for in a quality hair perfume Ingredients The most common ingredients in hair perfumes include alcohol and water in different concentrations, synthetic ingredients, aldehydes or organic compounds, animal extracts and essential oils. Bestreviews, The Mercury News, 6 Feb. 2025 Variations: Chanel No. 5 Eau de Parfum was reinterpreted by master perfumer Jacques Polge decades later in 1986, maintaining the aldehydes, vanilla, and May rose, but now opposing bright citrus notes. Kiana Murden, Vogue, 11 Feb. 2025 Echoing the brand’s minimalist aesthetic, each fragrance has a short formula, including just three natural ingredients, aldehydes, alcohol from upcycled carbon emissions and water. Jennifer Weil, WWD, 28 Jan. 2025 Walker, in fact, explains that one of the by-products of alcohol metabolism is a class of chemicals, known as aldehydes, that are especially prone to impede REM sleep. Adam Gopnik, The New Yorker, 20 Jan. 2025 See All Example Sentences for aldehyde

Word History

Etymology

German Aldehyd, from New Latin al. dehyd., abbreviation of alcohol dehydrogenatum dehydrogenated alcohol

First Known Use

1833, in the meaning defined above

Time Traveler
The first known use of aldehyde was in 1833

Browse Nearby Words

Cite this Entry

“Aldehyde.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aldehyde. Accessed 6 Mar. 2025.

Medical Definition

aldehyde

noun
al·​de·​hyde ˈal-də-ˌhīd How to pronounce aldehyde (audio)
: acetaldehyde
broadly : any of various highly reactive compounds typified by acetaldehyde and characterized by the group CHO
aldehydic adjective
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!