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

Although antacids commonly contain other forms of magnesium, magnesium glycinate, given its safety and tolerability, has the potential to help with heartburn. —Melissa Nieves, Verywell Health, 7 Feb. 2025

One morning, after waking up with worsening pain, the OP followed their usual routine: antacids, sitting upright, and eating saltines. —Jonathan Granoff, Newsweek, 29 Jan. 2025

If the idea of paying for Mac antivirus gives you indigestion, don’t reach for the antacid. —PCMAG, 24 Jan. 2025

In another case, the company allegedly labeled a fentanyl precursor as an antacid. —Kevin Lynn, Newsweek, 6 Jan. 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