Dictionary.com
definitions
  • synonyms

luminous

[loo-muh-nuhs]
adjective
  1. radiating or reflecting light; shining; bright.
  2. lighted up or illuminated; well-lighted: the luminous ballroom.
  3. brilliant intellectually; enlightened or enlightening, as a writer or a writer's works: a luminous concept; luminous prose.
  4. clear; readily intelligible: a concise, luminous report.
Show More

Origin of luminous

First recorded in 1400–50; late Middle English word from Latin word lūminōsus. See lumen, -ous
Related formslu·mi·nous·ly, adverblu·mi·nous·ness, nounnon·lu·mi·nous, adjectivenon·lu·mi·nous·ly, adverbnon·lu·mi·nous·ness, nounself-lu·mi·nous, adjectivesem·i·lu·mi·nous, adjectivesem·i·lu·mi·nous·ly, adverbsem·i·lu·mi·nous·ness, nounun·lu·mi·nous, adjectiveun·lu·mi·nous·ly, adverbun·lu·mi·nous·ness, noun

Synonyms

Antonyms

1, 2. dark. 3. stupid. 4. obscure.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for non-luminous

Historical Examples

  • The Sun he describes as a mighty sphere, but at first non-luminous.

    The Astronomy of Milton's 'Paradise Lost'

    Thomas Orchard

  • The reply was readyIt must be non-luminous, as are our planets.

    Eureka:

    Edgar A. Poe

  • The older surgeons even supposed that luminous wounds were more apt to heal properly than non-luminous ones.

  • These non-luminous mutants occasionally give rise to atavistic brilliantly luminous forms.

  • It occurs only in luminous, not in non-luminous animals, and is found in all parts of the mantle, especially the siphons.


British Dictionary definitions for non-luminous

luminous

adjective
  1. radiating or reflecting light; shining; glowingluminous colours
  2. (not in technical use) exhibiting luminescenceluminous paint
  3. full of light; well-lit
  4. (of a physical quantity in photometry) evaluated according to the visual sensation produced in an observer rather than by absolute energy measurementsluminous flux; luminous intensity Compare radiant
  5. easily understood; lucid; clear
  6. enlightening or wise
Show More
Derived Formsluminously, adverbluminousness, noun

Word Origin

C15: from Latin lūminōsus full of light, from lūmen light
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for non-luminous

luminous

adj.

early 15c., "full of light," from Latin luminosus "shining, full of light," from lumen (genitive luminis) "light," related to lucere "to shine" (see light (n.)). Related: Luminously.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

non-luminous in Medicine

luminous

(lōōmə-nəs)
adj.
  1. Emitting light, especially emitting self-generated light.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.