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Synonyms

antacid

American  
[ant-as-id] / æntˈæs ɪd /

adjective

  1. preventing, neutralizing, or counteracting acidity, as of the stomach.


noun

antacids plural
  1. an antacid agent.

antacid British  
/ æntˈæsɪd /

noun

  1. a substance used to neutralize acidity, esp in the stomach

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. having the properties of this substance

    antacid tablets

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of antacid

First recorded in 1725–35; ant- + acid

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At 29, abdominal pain was met with an antacid.

From Slate • May 6, 2026

The acid-reducing drugs includeproton pump inhibitors such as omeprazole and esomeprazole, histamine H2-receptor antagonists, or H2 blockers, such as cimetidine and famotidine, and antacid supplements.

From Science Daily • Apr. 24, 2024

Send the man a case of antacid, he’s going to need it.

From Washington Times • Dec. 6, 2023

“This is the antacid for the ocean,” Adkins says.

From Science Magazine • Dec. 8, 2021

Now she was chewing on the antacid tablets.

From "Middlesex: A Novel" by Jeffrey Eugenides

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