Standard Lemma guide

timolol

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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  • Received-Pronunciation: /ˈtɪm.ə.lɒl/
  • General-American: /ˈtaɪ.məˌlɔl/

1

noun

Meaning 1

A synthetic compound which acts as a beta blocker and is used to treat hypertension, migraine, and glaucoma.

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 beta blocker (trade name Blocadren) administered after heart attacks

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Blocadren

Antonyms: none provided

Broader terms: beta blocker, beta-blocking agent, beta-adrenergic blocker, beta-adrenergic blocking agent

History

Etymology

Probably from thi(a)- + mo(rpholine) + -olol (“β-adrenoceptor antagonist”).

Across languages

Translations

4 source translations are retained for this English entry.

  • Hungarian: timolol — beta blocker
  • Italian: timololo — beta blocker
  • Spanish: timolol — beta blocker
  • Turkish: timolol — beta blocker