acidic

adjective

acid·​ic ə-ˈsi-dik 

a-

1

: acid-forming

2

: acid

Synonyms of acidic

• acid
• sour

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

That’s because acidic foods such as tomatoes and oranges may react with aluminum foil, causing a metallic taste or slight discoloration, but don’t worry. — Bianca Lambert, Southern Living, 23 Aug. 2026

If the pH gets too acidic, nitrogen uptake is greatly reduced, leading to a deficiency in the plant, even if there’s plenty of nitrogen in the potting soil. — Andy Wilcox, Better Homes & Gardens, 22 Aug. 2026

Its flavors are so rich and gritty, with bright, acidic high notes, that a bite-size square or two is enough. — Kendra Nordin Beato, Christian Science Monitor, 21 Aug. 2026

Ryan Marino, the standards development and research manager for the Tile Council of North America, cautions homeowners to stay away from strong acidic cleaners. — Abid Haque, Architectural Digest, 20 Aug. 2026

Word History

Etymology

acid entry 1 + -ic entry 1

First Known Use

1866, in the meaning defined at sense 1

Rhymes for acidic

• davidic
• fluidic
• hasidic

Kids Definition

acidic

adjective

acid·​ic ə-ˈsid-ik 

a-

1

: acid-forming

2

: acid

Medical Definition

acidic

adjective

acid·​ic ə-ˈsid-ik, a- 

1

: acid-forming

2

: acid