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[as-i-tal] /ˈæs ɪˌtæl/
noun, Chemistry
Also called diethylacetal. a colorless, volatile, sparingly water-soluble liquid, C 6 H 14 O 2 , having a nutlike aftertaste, obtained from acetaldehyde and ethyl alcohol: used chiefly as a solvent and in the manufacture of perfumes.
any of a class of compounds of aldehydes with alcohols.
Origin of acetal
1850-55; acet- + -al3 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for acetal
  • Some polymers, however, are sensitive to attack, including acetal resin and polybutene.
British Dictionary definitions for acetal


1,1-diethoxyethane; a colourless volatile liquid used as a solvent and in perfumes. Formula: CH3CH(OC2H5)2
any organic compound containing the group -CH(OR1)OR2, where R1 and R2 are other organic groups
Word Origin
C19: from German Azetal, from aceto- + alcohol
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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acetal in Medicine

acetal ac·e·tal (ās'ĭ-tāl')

  1. A colorless, flammable, volatile liquid used as a solvent.

  2. Any of the compounds formed from aldehydes combined with alcohol.

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