• synonyms


See more synonyms for acidity on Thesaurus.com
  1. the quality or state of being acid.
  2. sourness; tartness.
  3. excessive acid quality, as of the gastric juice.
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Origin of acidity

From the Late Latin word aciditās, dating back to 1610–20. See acid, -ity
Related formsnon·a·cid·i·ty, nouno·ver·a·cid·i·ty, nounpre·a·cid·i·ty, nounsu·per·a·cid·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for acidity

tartness, acerbity, pungency, sourness, causticity

Examples from the Web for acidity

Contemporary Examples of acidity

Historical Examples of acidity

British Dictionary definitions for acidity


noun plural -ties
  1. the quality or state of being acid
  2. the amount of acid present in a solution, often expressed in terms of pH
  3. another name for hyperacidity
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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

Word Origin and History for acidity


1610s, from French acidité (26c.) or directly from Latin aciditatem (nominative aciditas), noun of quality from Latin acidus (see acid (adj.)).

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Online Etymology Dictionary, © 2010 Douglas Harper

acidity in Medicine


  1. The state, quality, or degree of being acid.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.