lumen
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See also: lúmen
English
Etymology
Borrowed from Latin lumen (“light, an opening”). Use as a unit was first adopted by French physicist André Blondel in 1894.
Pronunciation
- (Received Pronunciation) IPA(key): /ˈluːmən/
- (General American) enPR: lo͞oʹmən, IPA(key): /ˈlumən/
Audio (UK) (file) - Rhymes: -uːmən
- Hyphenation: lu‧men
Noun
lumen (plural lumens or lumina)
- (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.
- (anatomy) The cavity or channel within a tube or tubular organ.
- (botany) The cavity bounded by a plant cell wall.
- (medicine) The bore of a tube such as a hollow needle or catheter.
Derived terms
Related terms
Translations
SI-unit for luminous flux
|
anatomy: cavity within tubular organ
botany: cavity bounded by cell wall
Czech
Pronunciation
Etymology 1
Noun
lumen m inan
- lumen (unit of luminous flux)
Declension
Etymology 2
Noun
lumen m anim
Declension
Further reading
- lumen in Příruční slovník jazyka českého, 1935–1957
- lumen in Slovník spisovného jazyka českého, 1960–1971, 1989
Finnish
Etymology 1
Pronunciation
Noun
lumen
Declension
| Inflection of lumen (Kotus type 6/paperi, no gradation) | ||||
|---|---|---|---|---|
| nominative | lumen | lumenit | ||
| genitive | lumenin | lumenien lumeneiden lumeneitten | ||
| partitive | lumenia | lumeneita lumeneja | ||
| illative | lumeniin | lumeneihin | ||
| singular | plural | |||
| nominative | lumen | lumenit | ||
| accusative | nom. | lumen | lumenit | |
| gen. | lumenin | |||
| genitive | lumenin | lumenien lumeneiden lumeneitten | ||
| partitive | lumenia | lumeneita lumeneja | ||
| inessive | lumenissa | lumeneissa | ||
| elative | lumenista | lumeneista | ||
| illative | lumeniin | lumeneihin | ||
| adessive | lumenilla | lumeneilla | ||
| ablative | lumenilta | lumeneilta | ||
| allative | lumenille | lumeneille | ||
| essive | lumenina | lumeneina | ||
| translative | lumeniksi | lumeneiksi | ||
| abessive | lumenitta | lumeneitta | ||
| instructive | — | lumenein | ||
| comitative | See the possessive forms below. | |||
Alternative forms
Further reading
- “lumen”, in Kielitoimiston sanakirja [Dictionary of Contemporary Finnish] (in Finnish) (online dictionary, continuously updated), Kotimaisten kielten keskuksen verkkojulkaisuja 35, Helsinki: Kotimaisten kielten tutkimuskeskus (Institute for the Languages of Finland), 2004–, retrieved 2023-07-01
Etymology 2
Pronunciation
Noun
lumen
Anagrams
French
Etymology
Pronunciation
Noun
lumen m (plural lumens)
Further reading
- “lumen”, in Trésor de la langue française informatisé , 2012.
Latin
Etymology
From Proto-Italic *louksmən, from Proto-Indo-European *léwk-s-mn̥, derived from the root *lewk- (“bright”).
Pronunciation
Noun
lūmen n (genitive lūminis); third declension
- light, source of light
- Synonym: lūx
- (poetic) the eyes
- (poetic) daylight
- (poetic) brightness
- (poetic) the light of life
- An opening through which light can penetrate such as an air-hole or a window.
- The opening or orifice in a water-pipe or funnel
- (figuratively) a luminary, star, light (a most distinguished person)
Declension
Third-declension noun (neuter, imparisyllabic non-i-stem).
| Case | Singular | Plural |
|---|---|---|
| Nominative | lūmen | lūmina |
| Genitive | lūminis | lūminum |
| Dative | lūminī | lūminibus |
| Accusative | lūmen | lūmina |
| Ablative | lūmine | lūminibus |
| Vocative | lūmen | lūmina |
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 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
- to lose one's sight: oculos, lumina amittere
Polish
Etymology
Pronunciation
Noun
lumen m inan
- lumen (SI-unit)
- (archaic) display, explanation
Declension
Declension of lumen
Further reading
- lumen in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN
- lumen in Polish dictionaries at PWN
Romanian
Etymology
Borrowed from Latin lumen, French lumen. Doublet of the inherited lume.
Noun
lumen m (plural lumeni)
Noun
lumen n (plural lumene)
Spanish
Etymology
Borrowed from Latin lumen. Doublet of the inherited lumbre.
Pronunciation
Noun
lumen m (plural lúmenes)
Further reading
- “lumen”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014
Swedish
Etymology
Noun
lumen
- lumen (singular and plural)