[al-dawl, -dol]

noun Chemistry.

Also called acetaldol. a colorless, syrupy, water-soluble liquid, C4H8O2, formed by the condensation of acetaldehyde: used chiefly in the manufacture of rubber vulcanizers and accelerators, and in perfumery.
any of a class of compounds containing both an alcohol and an aldehyde functional group, formed by a condensation reaction between aldehyde or ketone molecules.

Nearby words

  1. aldington, richard,
  2. aldis lamp,
  3. aldiss,
  4. aldm.,
  5. aldohexose,
  6. aldolase,
  7. aldomet,
  8. aldopentose,
  9. aldose,
  10. aldosterone

Origin of aldol

First recorded in 1870–75; ald(ehyde) + -ol1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for aldol



a colourless or yellowish oily liquid, miscible with water, used in the manufacture of rubber accelerators, as an organic solvent, in perfume, and as a hypnotic and sedative. Formula: CH 3 CHOHCH 2 CHOSystematic name: 3-hydroxybutanal
any organic compound containing the functional group -CHOHCH 2 CHO
(modifier) consisting of, containing, or concerned with the group -CHOHCH 2 CHOaldol group or radical; aldol reaction

Word Origin for aldol

C19: from ald (ehyde) + -ol 1

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

Medicine definitions for aldol


[ăldôl, -dōl]


A thick, colorless to pale yellow liquid obtained from acetaldehyde and used in perfumery and as a solvent.
A similar aldehyde containing the group CH3OH-CO-CHOH.

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