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lumen

lu·men1 / ˈloōmən/ (abbr.: lm) • n. Physics the SI unit of luminous flux, equal to the amount of light emitted per second in a unit solid angle of one steradian from a uniform source of one candela. lu·men2 • n. (pl. -mi·na / -mənə/ ) Anat. the central cavity of a tubular or other hollow structure in an organism or cell. DERIVATIVES: lu·mi·nal / -mənl/ adj.

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"lumen." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/lumen-0

"lumen." The Oxford Pocket Dictionary of Current English. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/lumen-0

lumen

lumen
1. The space enclosed by a vessel, duct, or other tubular or saclike organ. The central cavity of blood vessels and of the digestive tract are examples.

2. Symbol lm. The SI unit of luminous flux equal to the flux emitted by a uniform point source of 1 candela in a solid angle of 1 steradian.

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"lumen." A Dictionary of Biology. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." A Dictionary of Biology. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lumen-1

"lumen." A Dictionary of Biology. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lumen-1

lumen

lumen (symbol lm) SI unit measuring the amount of light in an area for one second. The light emits in a unit solid angle (one steradian) from a source of unit intensity (one candela).

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"lumen." World Encyclopedia. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." World Encyclopedia. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/lumen

"lumen." World Encyclopedia. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/lumen

lumen

lumen (loo-min) n.
1. the space within a tubular or saclike part.

2. the SI unit of luminous flux. Symbol: lm.

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"lumen." A Dictionary of Nursing. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." A Dictionary of Nursing. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/lumen

"lumen." A Dictionary of Nursing. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/lumen

lumen

lumen A space enclosed by cell walls. Compare LACUNA.

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"lumen." A Dictionary of Plant Sciences. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." A Dictionary of Plant Sciences. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lumen

"lumen." A Dictionary of Plant Sciences. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lumen

lumen

lumen A cavity inside a cell or bodily structure.

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"lumen." A Dictionary of Zoology. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." A Dictionary of Zoology. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lumen-0

"lumen." A Dictionary of Zoology. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/lumen-0

lumen

lumen: see photometry.

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"lumen." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/lumen

"lumen." The Columbia Encyclopedia, 6th ed.. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/lumen

lumen

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"lumen." Oxford Dictionary of Rhymes. . Encyclopedia.com. 25 Jul. 2017 <http://www.encyclopedia.com>.

"lumen." Oxford Dictionary of Rhymes. . Encyclopedia.com. (July 25, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/lumen

"lumen." Oxford Dictionary of Rhymes. . Retrieved July 25, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/lumen