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

Magnesium is also available as a dietary supplement in pill, powder or liquid form, and can be found in several medications such as antacids and laxatives. —Daryl Austin, USA Today, 30 Mar. 2025

However, antacids are not recommended as a way to supplement calcium. —Melissa Nieves, Verywell Health, 27 Mar. 2025

On the other hand, antacids: Are available as OTC medications. —Karen Berger, Pharmd, Verywell Health, 24 Mar. 2025

Aluminum: Consumption of aluminum used as a food additive in products such as baking powder and cheese on frozen pizza – and in antacids – is generally considered safe. —Mike Snider, USA TODAY, 13 Mar. 2025

Word History

First Known Use

1699, in the meaning defined above

Rhymes for antacid

• acid
• placid

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