Simple Definition of luminous
: producing or seeming to produce light
: filled with light : brightly lit
: very bright in color
Full Definition of luminous
Examples of luminous in a sentence
I saw the cat's luminous eyes in my car's headlights.
a watch with a luminous dial
The room was luminous with sunlight.
Origin and Etymology of luminous
Middle English, from Latin luminosus, from lumin-, lumen
First Known Use: 15th century
Synonym Discussion of luminous
Rhymes with luminous
LUMINOUS Defined for Kids
Definition of luminous for Students
: giving off light <The dial of the clock was luminous and it shed a very soft green light. — George Selden, The Cricket in Times Square>
Medical Definition of luminous
1: emitting or reflecting usually steady, suffused, or glowing light
2: of or relating to light or to luminous flux
Seen and Heard
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