English

Noun

lumen ‎(plural lumens or lumina)

1. (physics) In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.
2. (anatomy) The cavity or channel within a tube or tubular organ.
3. (botany) The cavity bounded by a plant cell wall.
4. (medicine) The bore of a tube such as a hollow needle or catheter.

Derived terms

• lumenal
• lumen second

Related terms

• candela
• luminal
• lux

Translations

Finnish

Etymology 1

Alternative forms

• luumen

Pronunciation

• IPA^(key): /ˈluːmen/
• Rhymes: -uːmen
• Hyphenation: lu‧men

Noun

lumen

1. (physics, anatomy, botany, medicine) lumen

Declension

Etymology 2

Pronunciation

• IPA^(key): /ˈlumen/
• Hyphenation: lu‧men

Noun

lumen

1. Genitive singular form of lumi.

Anagrams

• lemun, melun

Latin

Etymology

From Proto-Indo-European *lewk-s-men.^[1] Surface analysis: lū(x) ‎(“light”) +‎ -men ‎(noun-forming derivational suffix).

Pronunciation

• (Classical) IPA^(key): /ˈluː.men/, [ˈɫuː.mẽ]
• (Ecclesiastical) IPA^(key): /ˈlu.men/, [ˈluː.men]

Noun

lūmen n ‎(genitive lūminis); third declension

1. light
2. (poetic) the eyes
3. (poetic) daylight
4. (poetic) brightness
5. (poetic) the light of life
6. An opening through which light can penetrate such as an air-hole or a window.
7. The opening or orifice in a water-pipe or funnel

Inflection

Third declension neuter.

Derived terms

Descendants

References

• lumen in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• lumen in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• LUMEN in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• Félix Gaffiot (1934), “lumen”, in Dictionnaire Illustré Latin-Français, Paris: Hachette.
• Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book, London: Macmillan and Co.
  • to lose one's sight: oculos, lumina amittere
    
  • to deprive a person of his eyes: luminibus orbare aliquem
    
  • to obscure the mental vision: mentis quasi luminibus officere (vid. sect. XIII. 6) or animo caliginem offundere
    
  • shining lights in the literary world: clarissima litterarum lumina
    
  • flowers of rhetoric; embellishments of style: lumina, flores dicendi (De Or. 3. 25. 96)
    
  • to obstruct a person's view, shut out his light by building: luminibus alicuius obstruere, officere
    

1. ↑ Jacqueline Picoche, Jean-Claude Rolland, Dictionnaire étymologique du français, Paris 2009, Dictionnaires Le Robert, ISBN 978-2-84902-424-9

Polish

Noun

lumen m inan

1. lumen (SI-unit)

Declension

Swedish

Noun

lumen

1. lumen (singular and plural)