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PORTUGUESE · A WORD WITH POSSIBILITIES

lúmen.

lumen (SI-unit of luminous flux)

5 characters2 syllables approx.Português language

Meaning & usage

noun/ˈlũ.mẽj̃/Brazil[ˈlũ.mẽɪ̯̃]Brazil/ˈlu.mɛn/Portugal

  1. lumen (SI-unit of luminous flux)

    masculine

  2. lumen (the space within tubular organ)

    masculine
Where this word comes from

Etymology tree Proto-Indo-European *lewk- Proto-Indo-European *-s- Proto-Indo-European *-mn̥ Proto-Indo-European *léwksmn̥ Proto-Italic *louksmən Latin lūmenlbor. Portuguese lúmen Learned borrowing from Latin lūmen. Doublet of lume.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

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