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hydroxyl

Upper-Intermediate (B2)

IPA: /haɪˈdrɒksɪl/

KK: /haɪˈdrɒksɪl/

noun
Definition

A chemical group made up of one oxygen atom and one hydrogen atom, often found in various compounds like acids and alcohols.


Example

The hydroxyl group is essential in the structure of alcohols.


Conversation
Sloth A
I was reading about how important the hydroxyl group is in organic chemistry.
Sloth B
Oh really? What does it do exactly?
Sloth A
It plays a crucial role in forming alcohols and acids.
Sloth B
That makes sense! It's fascinating how such small groups can have such big effects.

Synonyms & Antonyms
Synonyms
hydroxide
alkoxide
phenoxide
Antonyms
acid
cation
anion
Root Explanation

Hydroxyl is formed from "hydro-" (from Greek "hydor", meaning water) and "-yl" (a suffix used in chemistry to denote a radical or group). The term refers to the hydroxyl group, which consists of an oxygen atom bonded to a hydrogen atom, resembling water.

Memory Tip

Think of 'water' ('hydro-') and a chemical group ('-yl') to remember that hydroxyl refers to a group related to water.

Visually Confused Words
dihydroxy
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