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n. Chemistry
An organic group having the general formula RCO-, derived from an organic acid.

[ac(id) + -yl.]


1. (Chemistry) (modifier) of, denoting, or containing the monovalent group of atoms RCO-, where R is an organic group: acyl group or radical; acyl substitution.
2. (Elements & Compounds) an organometallic compound in which a metal atom is directly bound to an acyl group
[C20: from acid + -yl]


(ˈæs ɪl, -il)

the univalent group RCO–, where R is any organic group attached to one bond of the carbonyl group.
[1895–1900; < German]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.acyl - any group or radical of the form RCO- where R is an organic group; "an example of the acyl group is the acetyl group"
acetyl, acetyl group, acetyl radical, ethanoyl group, ethanoyl radical - the organic group of acetic acid (CH3CO-)
chemical group, radical, group - (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
foryml - (chemistry) the negative univalent acyl radical CHO that occurs in aldehydes
References in periodicals archive ?
Steady-state levels of acyl CoA oxidase (ACO); 3-hydroxy, 3-methylglutaryl CoA reductase (HMG-R); and apolipoprotein A-I (Apo A-I) mRNA were examined after 24-hour incubation in the absence (control) or presence of 100 [micro]m each of linoleic acid (LA), cis-9, traps-11 CLA or traps-10, cis-12 CLA.
Molecular cloning of the peroxisome proliferators-induced 46kDa cytosolic acyl CoA thioesterase from mouse and rat liver--recombinant expression in Escherichia coil, tissue expression and nutritional regulation.