lumenとは 意味・読み方・使い方

語源

Borrowed from Latin lūmen (“light, an opening”). Use as a unit was first adopted by French physicist André Blondel in 1894.

発音

• (Received Pronunciation) IPA: /ˈluːmən/
• (General American) enPR: lo͞oʹmən, IPA: /ˈlumən/
• 韻: -uːmən
• ハイフネーション: lu‧men

名詞

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.

派生語

関連する語

• candela
• luminal
• lux

発音

• (Classical Latin) IPA: [ˈɫuː.mɛn]
• (modern Italianate Ecclesiastical) IPA: [ˈluː.men]

名詞

lūmen n (genitive lūminis); third declension

1. light, source of light

   Synonym: lūx

2. (poetic) the eyes
   • 29 BCE – 19 BCE, Vergilius, Aeneis 4.185:

     [...] nec dulcī dēclīnat lūmina somnō.

     [Rumor] never closes her eyes in sweet slumber.

3. (poetic) daylight
   • 29 BCE – 19 BCE, Vergilius, Aeneis 6.356
4. (poetic) brightness
5. (poetic) the light of life
   • 8 CE – 12 CE, Ovidius, Tristia 4.4.45
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
8. (figuratively) a luminary, star, light (a most distinguished person)

語形変化

Third-declension noun (neuter, imparisyllabic non-i-stem).

派生語

派生した語

参照

• “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, Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “lumen”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• Carl Meißner; Henry William Auden (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