Word of the Day:

: clear in thought or expression

The professor gave a luculent introduction to quantum mechanics. 

"These glimpses of the Crown-Prince, reflected on us in this manner, are not very luculent to the reader … but some features do gleam forth, good and not so good; which, with others coming, may coalesce into something conceivable." — Thomas Carlyle, The History of Frederick II of Prussia, 1858–1865

More example sentences

To shed light on the meaning of luculent, one need only look at its root—the Latin noun lux, meaning "light." The English word first appeared in the 15th century with the meaning "brilliant" or "shining," as in "a luculent flame." By the mid-16th century, the "clear in thought or expression" sense had begun to shine, and by that century's end another sense was flickering with the meaning "illustrious" or "resplendent," as in Ben Jonson's 1599 description of a "most debonair and luculent lady." Both the "illustrious" and the "emitting light" senses have fallen out of use, and even the "clear" sense is now rare. Today's writers seem to prefer another lux descendant with a similar meaning: lucid.