[ uh-sij-uh-luh s ]
/ əˈsɪdʒ ə ləs /


slightly sour.
sharp; caustic: his acidulous criticism of the book.
moderately acid or tart; subacid.
Also acidulent.

Origin of acidulous

From the Latin word acidulus, dating back to 1760–70. See acid, -ulous

Related forms

sub·a·cid·u·lous, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for acidulous

British Dictionary definitions for acidulous



/ (əˈsɪdjʊləs) /


rather sour
sharp or sour in speech, manner, etc; acid

Word Origin for acidulous

C18: from Latin acidulus sourish, diminutive of acidus sour
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 acidulous


[ ə-sĭjə-ləs ]


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