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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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
Cilantro contains natural compounds called aldehydes.
—Caroline C. Boyle, USA Today, 21 July 2025
Investigating ways to reverse cellular damage and restore normal function, the researchers examined a gene that produces aldehyde dehydrogenase (ALDH1A1), an enzyme involved in breaking down aldehydes.
—Paul McClure 03, New Atlas, 3 June 2025
Future research will investigate the impact of aldehyde metabolism in other respiratory diseases, including asthma, chronic obstructive pulmonary disease (COPD), and cystic fibrosis, which have also been linked to PM2.5 exposure.
—Paul McClure 03, New Atlas, 3 June 2025
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Kimberly Wilson, Essence, 15 Aug. 2025
Cilantro contains natural compounds called aldehydes.
—Caroline C. Boyle, USA Today, 21 July 2025
Investigating ways to reverse cellular damage and restore normal function, the researchers examined a gene that produces aldehyde dehydrogenase (ALDH1A1), an enzyme involved in breaking down aldehydes.
—Paul McClure 03, New Atlas, 3 June 2025
Future research will investigate the impact of aldehyde metabolism in other respiratory diseases, including asthma, chronic obstructive pulmonary disease (COPD), and cystic fibrosis, which have also been linked to PM2.5 exposure.
—Paul McClure 03, New Atlas, 3 June 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 1 Sep. 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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