Illuminous vs. Luminous

Illuminous and Luminous Definitions
Illuminous
(obsolete) bright; clear
Luminous
Emitting light, especially in the dark; shining.
Illuminous
Bright; clear.
Luminous
Reflecting light; illuminated
"He watched a luminous cloud drifting up from the Gulf" (Tim Gautreaux).
Luminous
Having a high degree of saturation
A luminous green.
Luminous
Presented or perceived clearly or vividly
Luminous memories.
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Luminous
Enlightened or intelligent
Luminous ideas.
Luminous
Emitting light; glowing brightly; shining.
Luminous
Brightly illuminated.
Luminous
Clear; enlightening; easy to understand.
A luminous explanation
Luminous
Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous color.
Fire burneth wood, making it . . . luminous.
The mountains lift . . . their lofty and luminous heads.
Luminous
Illuminated; full of light; bright; as, many candles made the room luminous.
Up the staircase moved a luminous space in the darkness.
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Luminous
Enlightened; intelligent; also, clear; intelligible; as, a luminous mind.
Luminous
Softly bright or radiant;
A house aglow with lights
Glowing embers
Lambent tongues of flame
The lucent moon
A sky luminous with stars