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

Equatic pumps seawater through an electrolyzer, where an electric current passes through a sandwich of plastic and metal plates and separates the water into two streams, one alkaline and one acidic, while also producing oxygen and hydrogen. — Alec Luhn, Scientific American, 20 Oct. 2026

The artist made posters in the 1980s, but the printing was on acidic paper and the work deteriorated quickly. — Tessa Solomon, ARTnews.com, 15 Oct. 2026

Descaling solution is an acidic liquid that reacts with—and therefore breaks down—alkaline mineral build ups that happen over time wherever tap water sits or flows. — Emily Farris, Bon Appetit Magazine, 13 Oct. 2026

The Bongulo Paneer — cooked in bamboo — with a coconut and capsicum poriyal blends peanut chutney with acidic gongura sour cream and fiery gunpowder. — Heidi Finley, Charlotte Observer, 2 Oct. 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