acid·ic | \ ə-ˈsi-dik , a- \

Definition of acidic 

1 : acid-forming

2 : acid

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Examples of acidic in a Sentence

The soil in our garden is very acidic. the acidic water of a polluted lake

Recent Examples on the Web

Only use this on tough spots and sparingly so — vitamin C is highly acidic and can sensitize your skin if overused at this concentration. Ashley Weatherford, The Cut, "Everything at Paula’s Choice Is on Sale Right Now," 13 June 2018 Substances with a pH less than 7 are acidic and those above 7 are alkaline. Casey Quackenbush, Time, "Google Doodle Celebrates S.P.L. Sørensen, the Trailblazing Chemist Behind the pH Scale," 29 May 2018 The ocean is becoming more acidic, which threatens some plankton. James Gorman, New York Times, "The Ruthless Phronima, and Other Hidden Wonders of the Sea," 22 Mar. 2018 Minor, inconsequential, wan, harshly acidic are among the ways it is usually described — fit only as the base wine for a kir, an aperitif made by blending it with crème de cassis. Eric Asimov, New York Times, "The Aligoté Defense Rests," 28 June 2018 And those tomatoes should also be bright and acidic. Alex Delany, Bon Appetit, "What’s the Best New York Slice? I Ate at 30 Pizza Joints to Find Out," 6 June 2018 Like cranberries, blueberries thrive in acidic soils, which the Pinelands have in abundance. Rachel Wharton, New York Times, "In the Shadow of the Blueberry Titans, Smaller Growers Thrive," 2 July 2018 But, a significant number are quite different, especially those from California – heavier and less acidic, with more neutral flavors of honeydew melons or ripe pears. Marnie Old,, "Great Wine Values: Casillero del Diablo Sauvignon Blanc," 2 July 2018 Founded in 1973, Embrapa made the cerrado’s acidic soils hospitable to maize, soyabean and cattle, and created types of crops and livestock that could thrive in such climes. The Economist, "Tough times for Embrapa, a jewel of Brazilian innovation," 28 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'acidic.' 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 acidic

1866, in the meaning defined at sense 1

History and Etymology for acidic

acid entry 1 + -ic entry 1

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Statistics for acidic

Last Updated

21 Sep 2018

Look-up Popularity

Time Traveler for acidic

The first known use of acidic was in 1866

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More Definitions for acidic



English Language Learners Definition of acidic

: having a very sour or sharp taste

: containing acid


acid·ic | \ ə-ˈsid-ik, a- \

Medical Definition of acidic 

1 : acid-forming

2 : acid

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Comments on acidic

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


to deposit or conceal in a hiding place

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