Standard Lemma guide

clonidine

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: /ˈklɒn.ɪd.iːn/
  • General-American: /ˈklɑn.əˌdiːn/
  • CMU ARPABET: K L AA1 N IH0 D IY2 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A drug that acts as an α2-adrenoreceptor agonist, used in the treatment of hypertension, opiate withdrawal, and a variety of other conditions.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

an antihypertensive (trade name Catapres) that can be administered orally or via transdermal patches

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Catapres

Antonyms: none provided

Broader terms: antihypertensive, antihypertensive drug

History

Etymology

From chlo(ro)- + -(gua)nidine.