Also found in: Medical.
Variant of aceto-.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a combining form with the meanings “vinegar,” “acetic acid,” used esp. in the names of chemical compounds in which acetic acid or the acetyl group is present: acetaldehyde.Also, esp. before a consonant,aceto-.
[< Latin acēt(um) vinegar. compare acid]
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