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noun

aldehyde

AL-dih-hyde
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Aldehyde (noun) means an aldehyde is any of a group of reactive organic compounds with a carbonyl group attached to a hydrocarbon group and a hydrogen atom. Example: “Formaldehyde is the simplest aldehyde and is widely used in industry.”

noun
1
organic chemistry An aldehyde is any of a group of reactive organic compounds with a carbonyl group attached to a hydrocarbon group and a hydrogen atom.
"Formaldehyde is the simplest aldehyde and is widely used in industry."
"The chemist identified the unknown compound as an aldehyde from its structure."
"Acetaldehyde and benzaldehyde are both common examples of an aldehyde."

How to use aldehyde

Learner’s notes

In plain EnglishAn aldehyde is a type of reactive chemical compound found in substances like formaldehyde.

When to use it

It is a specialist chemistry term, rarely used outside scientific writing.

Memory tip

Watch the spelling: al-de-hyde, not al-de-hide.

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Easily confused with
Common pairings
aldehyde group simple aldehyde aldehyde compound detect an aldehyde
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Fill the gap

Can you complete this real example?

Formaldehyde is the simplest _____ and is widely used in industry.

Etymology

The word was borrowed from German Aldehyd, itself formed by contracting the Latin phrase al(cohol) dehyd(rogenatum), meaning dehydrogenated alcohol.

Origin: German

Rhymes for aldehyde

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Frequently asked questions

What is an aldehyde?
It is any of a class of reactive organic compounds carrying a carbonyl group attached to a hydrocarbon group and a hydrogen atom.
What are examples of an aldehyde?
Formaldehyde, acetaldehyde and benzaldehyde are all examples of aldehydes.
Where does the word aldehyde come from?
It comes from German Aldehyd, a contraction of the Latin for "dehydrogenated alcohol".
What is the meaning of aldehyde?
"aldehyde" (noun) means an aldehyde is any of a group of reactive organic compounds with a carbonyl group attached to a hydrocarbon group and a hydrogen atom.