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

Baking soda works by absorbing odors and neutralizing musty, acidic smells from mildew, mold, and bacteria. — Brandee Gruener, Southern Living, 4 July 2026

Wood ash is also quite alkaline, so can be used as a neutralizer if your soil is too acidic. — Rae Ford, Martha Stewart, 4 July 2026

Keep in mind that coffee has a slightly acidic pH and works best on acid-loving plants, such as blueberries, azaleas, and certain succulents. — Lauren Landers, Better Homes & Gardens, 4 July 2026

Wines made from Sauvignon Blanc grapes are very popular because of their light, fruity, acidic, and refreshing nature. — Mike Desimone, Robb Report, 3 July 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