acetyl

American  

[uh-seet-l, uh-set-l, as-i-tl] / əˈsit l, əˈsɛt l, ˈæs ɪ tl /

adjective

Chemistry.

1. containing the acetyl group.

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acetyl British  

/ ˈæsɪˌtaɪl, ˌæsɪˈtɪlɪk, əˈsiːtaɪl /

noun

1. (modifier) of, consisting of, or containing the monovalent group CH 3 CO-

   acetyl group or radical

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acetyl Scientific  

/ ə-sēt′l,ăs′ĭ-tl /

1. The radical CH ₃ CO, derived from acetic acid.

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Other Word Forms

• acetylic
  adjective

Etymology

Origin of acetyl

First recorded in 1860–65; acet- + -yl

Example Sentences

The team discovered that during stress, a protein known as SIRT1 removes acetyl groups from MED1.

From Science Daily • Dec. 1, 2025

HDAC8 removes chemical modifications called acetyl groups from other proteins, leading to alterations in gene expression patterns.

From Science Daily • Nov. 29, 2023

Check with her about supplements such as alpha-lipoic acid, benfotiamine and acetyl L-carnitine.

From Seattle Times • Jan. 4, 2023

Acetyl CoA can be used in a variety of ways by the cell, but its major function is to deliver the acetyl group derived from pyruvate to the next pathway in glucose catabolism.

From Textbooks • Apr. 25, 2013

They form acetyl esters, or acetates, which can be separated from each other and identified by their crystal forms and melting points.

From The Chemistry of Plant Life by Thatcher, Roscoe Wilfred