acid·​i·​ty | \ə-ˈsi-də-tē, a-\
plural acidities

Definition of acidity 

1 : the quality, state, or degree of being acid

2 : the state of being excessively acid

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Examples of acidity in a Sentence

detected a certain acidity in the way he responded the acidity of their relationship was well known to their mutual acquaintances

Recent Examples on the Web

And her homemade seasoning mixes often include spices, dehydrated herbs, sugar for sweetness and a pinch of citric acid for acidity without moisture. Melissa Clark, New York Times, "The Secret to Perfect Popcorn Is Already in Your Cupboard," 22 June 2018 Sourced from the cool Napa Carneros region, this soft red has a lively acidity that lends a juicy edge. 4. Lettie Teague, WSJ, "Enough With the Merlot Bashing: A Wine That’s Ripe for Revival," 26 Apr. 2018 Master Vintner Charles Smith hits another one out of the park with this rosé that’s bright with just the right level of acidity. Chris Morris, Fortune, "6 Beers and 6 Wines to Improve Your Fourth of July Cookout," 29 June 2018 Light sauces that rely on natural juices and bright acidity. Craig Laban,, "At Cadence, bold new culinary talents cook with the seasons," 1 June 2018 It’s seductive and expressive, with a nice frame of acidity. Esther Mobley, San Francisco Chronicle, "Tasting notes: The diverse, dynamic wines of Lodi," 20 May 2018 The lugaw has a delicate flavor, laced with bright acidity and a subtle, herbaceous bite. Melissa Pandika, Bon Appetit, "Aileen Suzara Is Flipping the Script About 'Unhealthy' Filipino Food," 8 Mar. 2018 The deficiency can also be caused by a low soil acidity and a calcium deficiency in the soil. Tom Maccubbin,, "How to treat blossom-end rot," 9 June 2018 Studying river data nationwide, research published Monday explains that 37 percent of all U.S. river systems have greater salinity, and 90 percent have seen a decrease in acidity, compared with a century ago. Eric Roston,, "First Came the Snow Bomb, Now Comes the Salt Bomb," 8 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acidity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of acidity

1615, in the meaning defined at sense 1

History and Etymology for acidity

borrowed from French & Late Latin; French acidité, going back to Middle French, borrowed from Late Latin aciditāt-, aciditās, from Latin acidus "sour, acid entry 2" + -itāt-, -itās -ity

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Statistics for acidity

Last Updated

23 Oct 2018

Look-up Popularity

Time Traveler for acidity

The first known use of acidity was in 1615

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More Definitions for acidity


acid·​i·​ty | \ə-ˈsi-də-tē \
plural acidities

Kids Definition of acidity

: the quality, state, or degree of being acid


acid·​i·​ty | \ə-ˈsid-ət-ē, a- \
plural acidities

Medical Definition of acidity 

1 : the quality, state, or degree of being sour or chemically acid the acidity of lemon juice

2 : the quality or state of being excessively or abnormally acid : hyperacidity

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Comments on acidity

What made you want to look up acidity? Please tell us where you read or heard it (including the quote, if possible).


obstinately defiant of authority

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