LUMENS

Noun

lumens

plural of lumen

Source: Wiktionary


LUMEN

Lu"men, n.; pl. L. Lumina (#), E. Lumens (#). [L., light, an opening for light.]

1. (Photom.) (a) A unit of illumination, being the amount of illumination of a unit area of spherical surface, due to a light of unit intensity placed at the center of the sphere. (b) A unit of light flux, being the flux through one square meter of surface the illumination of which is uniform and of unit brightness.

2. (Biol.) An opening, space, or cavity, esp. a tubular cavity; a vacuole.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

27 April 2025

APPROXIMATE

(adjective) not quite exact or correct; “the approximate time was 10 o’clock”; “a rough guess”; “a ballpark estimate”


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