Looking up...
luminous
/ˈluːmɪnəs/
emitting light
The luminous dial of the clock glowed softly in the dark room.
The clock's glowing face provided a gentle light in the darkness.
neutral
Emitting or reflecting light, especially in the dark.
The luminous paint on the exit signs made them visible even during a power outage.
The glow-in-the-dark paint ensured the exit signs were visible without electricity.
Her luminous eyes reflected the joy in her heart.
Her eyes shone brightly, showing her inner happiness.
Often used metaphorically to describe radiant qualities like beauty, intelligence, or emotion.
neutral
Very bright or shining.
The luminous morning sun cast long shadows across the field.
The bright morning sun created striking shadows in the open field.
Can describe natural or artificial light sources.
Collocations
luminous diala clock or watch face that glows in the darkluminous painta type of paint that glows after exposure to lightluminous beautya radiant, glowing appearance
Antonyms
Pro Tip
Avoid confusion with 'luminous' vs. 'luminescent'
'Luminous' implies light emission or reflection, often from an external source. 'Luminescent' refers to light produced by a chemical reaction (e.g., glow sticks).
Gold Rule
Use 'luminous' for reflected or emitted light
If something glows because it reflects light (e.g., a mirror), use 'luminous.' If it glows due to internal chemical processes (e.g., fireflies), use 'luminescent.'
Word Origin
From Latin *luminosus*, meaning 'full of light,' derived from *lumen* (light) + *-osus* (full of).
Usage Notes
Commonly used in both literal (physical light) and figurative (emotional radiance) contexts. Avoid overusing in formal writing unless describing light sources or metaphorical brightness.
Word Breakdown
lumin-
light
root-ous
full of
suffixEnglish Dictionary