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pseudoephedrine.

A sympathomimetic alkaloid commonly used as a decongestant; a chemical compound, an isomer of ephedrine, with the formula C₁₀H₁₅NO.

15 characters4 syllables approx.English language

Meaning & usage

noun/sjuː.dəʊˈɛf.ə.dɹiːn/Received-Pronunciation/su.doʊ.ɪˈfɛ.dɹɪn/General-American
  1. A sympathomimetic alkaloid commonly used as a decongestant; a chemical compound, an isomer of ephedrine, with the formula C₁₀H₁₅NO.

    countable · uncountable
Where this word comes from

Etymology tree Pre-Greekder.? Ancient Greek ψεύδω (pseúdō) Proto-Indo-European *-os Proto-Indo-European *-ēs Proto-Hellenic *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ής (-ḗs) Ancient Greek ψευδής (pseudḗs)der. Middle English pseudo- English pseudo- English ephedra English -ine English ephedrine English pseudoephedrine From pseudo- + ephedrine.

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Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.