lumen
(noun) a cavity or passage in a tubular organ; āthe lumen of the intestineā
lumen, lm
(noun) a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
Source: WordNet® 3.1
lumina
plural of lumen
• alumni, minaul
Source: Wiktionary
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
15 April 2025
(adjective) marked by or promising bad fortune; ātheir business venture was doomed from the startā; āan ill-fated business ventureā; āan ill-starred romanceā; āthe unlucky prisoner was again put in ironsā- W.H.Prescott
The Boston Tea Party helped popularize coffee in America. The hefty tea tax imposed on the colonies in 1773 resulted in America switching from tea to coffee. In the lead up to the Revolutionary War, it became patriotic to sip java instead of tea. The Civil War made the drink more pervasive. Coffee helped energize tired troops, and drinking it became an expression of freedom.
