Standard Lemma guide

labetalol

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: /ləˈbiː.təl.ɒl/
  • General-American: /ləˈbɛt.əˌlɔl/

1

noun

Meaning 1

A drug that acts as an alpha- and beta-blocker, used in the treatment of hypertension.

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

antihypertensive drug (trade names Trandate and Normodyne) that blocks alpha and beta-adrenergic receptors of the sympathetic nervous system (leading to a decrease in blood pressure)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: labetalol hydrochloride, Trandate, Normodyne

Antonyms: none provided

Broader terms: antihypertensive, antihypertensive drug, blocker, blocking agent

History

Etymology

From la- (“alteration of alpha”) + beta + -olol.