aldehyde
noun
al·de·hyde
ˈal-də-ˌhīd 
: 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
Examples of aldehyde in a Sentence
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Alcohols, acids, aldehydes, amines, and hydrocarbons abound in star-forming regions.
—
Ethan Siegel, Big Think, 15 Sep. 2025
The latest release Alto Astral, which became available on August 14th, opens with a combination of aldehydes and coconut that immediately sets it apart from everything else in the coconut category.
—Kimberly Wilson, Essence, 15 Aug. 2025
In one lab study, cilantro leaf extract was found to contain phytonutrients, like fatty alcohols and aldehyde, that exhibited antimicrobial and anti-inflammatory effects.
—Brittany Lubeck, Verywell Health, 5 Aug. 2025
Cilantro contains natural compounds called aldehydes.
—Caroline C. Boyle, USA Today, 21 July 2025
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Ethan Siegel, Big Think, 15 Sep. 2025
The latest release Alto Astral, which became available on August 14th, opens with a combination of aldehydes and coconut that immediately sets it apart from everything else in the coconut category.
—Kimberly Wilson, Essence, 15 Aug. 2025
In one lab study, cilantro leaf extract was found to contain phytonutrients, like fatty alcohols and aldehyde, that exhibited antimicrobial and anti-inflammatory effects.
—Brittany Lubeck, Verywell Health, 5 Aug. 2025
Cilantro contains natural compounds called aldehydes.
—Caroline C. Boyle, USA Today, 21 July 2025
See All Example Sentences for aldehyde
Cite this Entry
“Aldehyde.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aldehyde. Accessed 31 Oct. 2025.
Copy CitationMedical Definition
aldehyde
noun
al·de·hyde
ˈal-də-ˌhīd
: acetaldehyde
broadly
: any of various highly reactive compounds typified by acetaldehyde and characterized by the group CHO
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