Memidex: Free online dictionary/thesaurus and more....
| Free Tools | Preferences | About | Contact | Index

acetyl group

Definition:

the organic group of acetic acid

Class:

substance noun (substance and materials)

Plural:

acetyl groups

Original source:

Princeton WordNet

Synonyms:

acetyl | acetyl radical | CH3CO [chemical formula] | CH3CO- [chemical formula] | ethanoyl group | ethanoyl radical

Etymology:

Latin acētum "vinegar" + Ancient Greek ὕλη (hylē) "substance".
(Source: Wiktionary)  [more]

Definition references

Wikipedia:

Acetyl | C2H3[chemical formula]

a functional group, the acyl with chemical formula COCH3. It's sometimes represented by the symbol Ac. The acetyl group contains a methyl group single-bonded to a carbonyl. The carbonyl center of an acyl radical has one nonbonded... (37 of 716 words)

en​.wikipedia​.org​/wiki​/Acetyl

Random House Dictionary:

acetyl group [chemistry] | acetyl radical [synonym] | CH3CO· [chemical formula]

the univalent group derived from acetic acid. (7 of 16 words)

dictionary​.infoplease​.com​/acetyl-group

Collins Dictionary:

acetyl [modifier]

of, consisting of, or containing the monovalent group CH3CO- (9 of 336 words, 4 usage examples, pronunciations)

www​.collinsdictionary​.com​/dictionary​/english​/acetyl

Oxford Dictionary:

acetyl

Syllabification: (a·ce·tyl) | [modifier, chemistry] | the acyl radical _C(O)CH3, derived from acetic acid (12 of 42 words, 3 definitions, 2 usage examples, pronunciation)

oxforddictionaries​.com​/definition​/american english​/acetyl

acetyl [modifier, chemistry]

of or denoting the acyl radical _C(O)CH3, derived from acetic acid (11 of 36 words, 2 usage examples, pronunciation)

oxforddictionaries​.com​/definition​/english​/acetyl

New World Dictionary:

acetyl | acetylic [adjective, related]

the radical CHCO, derived from acetic acid: found only in compounds (11 of 25 words, pronunciations)

www​.yourdictionary​.com​/acetyl

Merriam-Webster:

acetyl | CH3CO- [chemical formula]

the radical .. of acetic acid [often used in combination] (10 of 24 words, pronunciation)

www​.merriam-webster​.com​/dictionary​/acetyl

American Heritage Dictionary:

acetyl | acetylic [adjective, related]

The acetic acid radical CH3CO. (5 of 12 words, pronunciations)

www​.yourdictionary​.com​/acetyl

Wiktionary:

acetyl [organic chemistry] | acetyls [plural] | CH3CO- [chemical formula]

The univalent radical CH3CO- derived from acetic acid. (8 of 11 words)

en​.wiktionary​.org​/wiki​/acetyl

Britannica Encyclopedia:

anhydride [chemical compound] | CH3CO [chemical formula] | SO3 [chemical formula]

any chemical compound obtained, either in practice or in principle, by the elimination of water from another compound. Examples of inorganic ... (21 of 236 words)

www​.britannica​.com​/E​Bchecked​/topic​/25412​/anhydride

Encarta Dictionary:

acetyl

relating to or containing the chemical group CH3CO- (8 of 22 words, pronunciation)

encarta​.msn​.com​/dictionary 1861583350​/definition​.html  [offline]

Etymology references

Wiktionary:

acetyl [organic chemistry] | acetyls [plural]

Origin: Latin acētum "vinegar" + Ancient Greek ὕλη (hylē) "substance".

en​.wiktionary​.org​/wiki​/acetyl

Collins Dictionary:

acetyl [modifier]

First use: 19th century

Origin: from acet(ic) + -yl

www​.collinsdictionary​.com​/dictionary​/english​/acetyl

Oxford Dictionary:

acetyl

First use: mid 19th century

Origin: "acetic" + "-yl"

oxforddictionaries​.com​/definition​/american english​/acetyl

acetic

First use: late 18th century

Origin: French acétique, from Latin acetum "vinegar"

oxforddictionaries​.com​/definition​/english​/acetic

-yl

Origin: Greek hulē "wood, material"

oxforddictionaries​.com​/definition​/american english​/--yl

New World Dictionary:

acetyl

Origin: acetic + "-yl"

www​.yourdictionary​.com​/acetyl

-yl

Origin: Greek hylē, wood, substance

www​.yourdictionary​.com​/yl-suffix

Audio references

Collins Dictionary:

acetyl [modifier]

Audio 1: British English pronunciation of "acetyl"

Audio 2: British English pronunciation of "acetyl"

Audio 3: British English pronunciation of "acetyl"

www​.collinsdictionary​.com​/dictionary​/english​/acetyl

the Free Dictionary:

acetyl

Audio 1: North American English pronunciation of "acetyl"

Audio 2: British English pronunciation of "acetyl"

Audio 3: North American English pronunciation of "acetyl" by speech synthesizer

www​.thefreedictionary​.com​/acetyl

Merriam-Webster Pronunciation:

acetyl

Audio: North American pronunciation of "acetyl"

www​.merriam-webster​.com​/audio​.php file=acetyl​02 word=acetyl

acetyl

Audio: North American pronunciation of "acetyl"

www​.merriam-webster​.com​/audio​.php file=acetyl​01 word=acetyl

YourDictionary Audio:

acetyl

Audio: North American English pronunciation of "acetyl" by speech synthesizer

www​.yourdictionary​.com​/acetyl

Page last updated: 2013-06-26

Copyright © 2008-2013 Memidex