Standard Lemma guide

famotidine

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • General-American: /fəˈmoʊ.tɪˌdin/

1

noun

Meaning 1

An H2 antagonist C8H15N7O2S3 (trademark Pepcid) used to inhibit gastric acid secretion especially in the short-term treatment of gastric and duodenal ulcers and gastroesophageal reflux disease and in the treatment of disorders (as Zollinger–Ellison syndrome) involving gastric acid hypersecretion.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a histamine blocker (trade name Pepcid) used to treat peptic ulcers and gastritis and esophageal reflux

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Pepcid

Antonyms: none provided

Broader terms: histamine blocker

History

Etymology

From (sul)famo(yl) + -tidine (“cimetidine derivative”).