lúmen
Portuguese, noun/ˈlũ.mẽj̃/
lúmen is spelled L-Ú-M-E-N (5 letters) and appears about once in every 7 million words in written Portuguese, the 84,550th most frequent Portuguese word form (wordfreq, 2021 data). Lúmen is a Portuguese masculine noun meaning “lumen (SI-unit of luminous flux)” (English Wiktionary, September 2026). The Portuguese Wiktionary (Wikcionário) defines it as “unidade de fluxo luminoso”.
What does lúmen mean in English?
noun
- 1
masculinelumen (SI-unit of luminous flux)
- 2
masculinelumen (the space within tubular organ)
Source: English Wiktionary, Portuguese section, dump of September 2, 2026 (CC BY-SA 4.0).
How Portuguese dictionaries define it
noun: 1. unidade de fluxo luminoso 2. cavidade no interior de um órgão, veia ou artéria
The definition in the Portuguese Wiktionary (Wikcionário), in Portuguese.
Source: Portuguese Wiktionary (Wikcionário), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of lúmen
- lumens Brazil plural
- lúmenes Portugal plural
- lume alternative
Source: English Wiktionary and Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce lúmen?
- Brazil /ˈlũ.mẽj̃/
- Brazil [ˈlũ.mẽɪ̯̃]
- Portugal /ˈlu.mɛn/
Sources: English Wiktionary, Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to lúmen
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is lúmen in Portuguese?
lúmen appears about once in every 7 million words in written Portuguese.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).