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aceto-

1.
a combining form with the meanings “vinegar,” “acetic acid,” used in the formation of compound words (acetometer), especially in the names of chemical compounds in which acetic acid or the acetyl group is present (acetophenetidin).
Also, especially before a vowel, acet-.
Origin
< Latin acēt(um) vinegar + -o-. Cf. acid, acescent
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for aceto-

aceto-

combining form
1.
containing an acetyl group or derived from acetic acid: acetone
Word Origin
from Latin acētum vinegar
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for aceto-

before vowels acet-, word-forming element from comb. form of acetic and generally indicating compounds from or related to acetic acid.

Online Etymology Dictionary, © 2010 Douglas Harper
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aceto- in Medicine

aceto- or acet-
pref.

  1. Acetic acid: acetaldehyde.

  2. Acetyl: acetanilide.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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