Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “antacid”


noun [C/U]  /æntˈæs·ɪd/ us  
a medicine you can take to reduce or prevent the uncomfortable feeling of having too much acid in the stomach
(Definition of antacid from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of antacid?
Add Cambridge dictionaries to your browser to your website

Definitions of “antacid” in other dictionaries

Word of the Day


a measure for liquid equal to about half a litre

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More