[ uh-sid-uh-fahy ]
See synonyms for: acidifyacidifiedacidifying on

verb (used with or without object),a·cid·i·fied, a·cid·i·fy·ing.
  1. to make or become acid; convert into an acid.

  2. to make or become sour.

Origin of acidify

First recorded in 1790–1800; acid + -ify

Other words from acidify

  • a·cid·i·fi·a·ble, adjective
  • a·cid·i·fi·ca·tion, noun
  • a·cid·i·fi·er, noun
  • re·a·cid·i·fi·ca·tion, noun
  • re·a·cid·i·fy, verb, re·a·cid·i·fied, re·a·cid·i·fy·ing.
  • sem·i·a·cid·i·fied, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use acidify in a sentence

  • Fisheries, already stressed by pollution and over-harvesting, will now confront warming and acidification.

  • The acidification of the sulphur by nitric or nitro-muriatic acid is likewise a slow and unpleasant operation.

  • But without this exposure and acidification, the butter is insipid and comparatively flavorless.

    Hints on Dairying | T. D. Curtis
  • A series of experiments in making Roquefort were tabulated to show the rate of acidification from various initial points.

    The Book of Cheese | Charles Thom and Walter Warner Fisk
  • The development of this acidification before the addition of rennet is known as the ripening of the milk.

    The Book of Cheese | Charles Thom and Walter Warner Fisk

British Dictionary definitions for acidify


/ (əˈsɪdɪˌfaɪ) /

verb-fies, -fying or -fied
  1. to convert into or become acid

Derived forms of acidify

  • acidifiable, adjective
  • acidification, noun
  • acidifier, noun

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