antacid

noun

ant·​ac·​id (ˌ)ant-ˈa-səd 

ˈant-ˌa-

: an agent that counteracts or neutralizes acidity

antacid adjective

Examples of antacid in a Sentence

Recent Examples on the Web

The Rolaids Relief Man Award, in addition to creating a lot of brand awareness for antacid medication, was given out from 1976 to 2012. —Andrew Baggarly, The Athletic, 21 Nov. 2024

Take medications, including antacids, histamine-2 (H2) receptor antagonists, or proton pump inhibitors. —Angelica Bottaro, Verywell Health, 4 Nov. 2024

Take an antacid or PPI to avoid stomach irritation. —Femi Aremu, Verywell Health, 29 Oct. 2024

These can range from OTC antidiarrheals and antacids to prescription laxatives and proton pump inhibitors (PPIs), depending on your symptoms. —Patricia Weiser, Pharmd, Verywell Health, 2 Oct. 2024

Word History

First Known Use

1699, in the meaning defined above

Kids Definition

antacid

adjective

ant·​ac·​id (ˈ)ant-ˈas-əd 

: tending to prevent or neutralize acidity

antacid tablets

antacid noun

Medical Definition

antacid

1 of 2 adjective

ant·​ac·​id (ˈ)ant-ˈas-əd 

variants also antiacid

ˌant-ē-ˈas-əd, ˌan-ˌtī- 

: tending to counteract acidity

antacid

2 of 2 noun

variants also antiacid

: an agent (as an alkali or absorbent) that counteracts or neutralizes acidity