lumen

noun

a cavity or passage in a tubular organ

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

Roots

lumenlumen- · Latin · light

Synonyms for lumen

luxn lightn

Synonyms & related words for lumen

Find synonyms, related words, and the definition of lumen — including lux, light. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to lumen

Explore words related to lumen — words associated with it, words that go with it, and its nearest matches in meaning. Related words include lumenal, lumina, lm, luminal, illuminance, footcandle, illumination, luminaire. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for lumen

Common synonyms for lumen include lux, light — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does lumen come from?

The word lumen breaks down into one root of Latin origin: the root lumen, from Latin lumen (“light”). Explore each root to see other English words built from the same source.