acid·​ic | \ ə-ˈsi-dik How to pronounce acidic (audio) , a-\

Definition of acidic

1 : acid-forming
2 : acid

Keep scrolling for more

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

Finally, your test also will include your soil’s pH, a measure of how acidic or alkaline your soil is. Arricca Elin Sansone, Country Living, "Here's How to Understand Fertilizer Numbers and Letters," 21 Mar. 2019 And adding an occasional quart of new oil doesn’t do anything to improve the old, broken-down, acidic oil that’s still swimming around in there. Ray Magliozzi,, "Friend who claims oil changes are unnecessary is flat-out wrong," 18 May 2018 After the wood vaporizes, the mixture is allowed to cool, forming an emulsion (a sort of mixture) of water, acidic oil, and sugars. Chris Lee, Ars Technica, "Lumber’s lure: Thanks to physics, viable biofuel may grow in the woods," 5 Apr. 2018 Skin is naturally on the more acidic side with pH levels around 4 to 6. Devon Abelman, Allure, "Then I Met You, a New Skin-Care Brand, Debuts With Double Cleansing Duo," 17 Oct. 2018 The first captured carbon out of ambient air using a filter of base amines that would bind with more acidic CO2. Megan Geuss, Ars Technica, "Company that sucks CO2 from air announces a new methane-producing plant," 4 Oct. 2018 Beware the more acidic varieties, like celery root, to avoid a Vitamin-C-like effect. Taylore Glynn, Marie Claire, "Here's What's Probably Causing Your Cold Sores," 26 Apr. 2017 There’s a planet with poles that flip, a supersized moon, and landscapes that harbor acidic pools, boiling rivers and living clouds. National Geographic, "Our Favorite Love Letters to Earth," 26 Mar. 2018 The saucing is more acidic than salty soy sauce, but also resets the palate. Krista Simmons, Condé Nast Traveler, "15 Best Sushi Restaurants in Los Angeles," 27 Feb. 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.

See More

First Known Use of acidic

1866, in the meaning defined at sense 1

History and Etymology for acidic

acid entry 1 + -ic entry 1

Keep scrolling for more

Learn More about acidic

Statistics for acidic

Last Updated

20 Apr 2019

Look-up Popularity

Time Traveler for acidic

The first known use of acidic was in 1866

See more words from the same year

Keep scrolling for more

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- How to pronounce acidic (audio) \

Medical Definition of acidic

1 : acid-forming
2 : acid

Keep scrolling for more

More from Merriam-Webster on acidic

Rhyming Dictionary: Words that rhyme with acidic

Thesaurus: All synonyms and antonyms for acidic

Spanish Central: Translation of acidic

Nglish: Translation of acidic for Spanish Speakers

Britannica English: Translation of acidic for Arabic Speakers

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 affect and impair by alcohol or a drug

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!