non-luminous
Gives no light
Non-luminous describes something that doesn't produce its own light.
The moon is non-luminous, reflecting sunlight rather than generating it.
The term appears in physics and astronomy to distinguish objects that shine by reflection from those that emit light directly: non-luminous planets, non-luminous matter.
Not bouncing light back
- absorptiveAble to soak up
- opaqueImpassable to light
- dullLacking edge or interest
- flatLacking vertical variation
subdued · diffuse · unreflecting · lusterless · lackluster · unpolished · unglazed · satin
Having no brightness
gloomy · pitch-black · inky · tenebrous · nocturnal · moonless · starless · crepuscular
Impossible to notice
- imperceptibleCannot be sensed
- indiscernibleUnable to be perceived
- unobservableCannot be detected
- unseenNot perceived visually
unperceived · unnoticeable · latent · subliminal · unapparent · hidden · concealed · veiled
nonreflective
Not bouncing light back
- absorptiveAble to soak up
- opaqueImpassable to light
- dullLacking edge or interest
flat · subdued · diffuse · unreflecting · lusterless · lackluster · unpolished · unglazed · satin · eggshell
lightless
Having no brightness
murky · gloomy · pitch-black · inky · tenebrous · nocturnal · moonless · starless · crepuscular · twilight
undetectable
Impossible to notice
- imperceptibleCannot be sensed
- indiscernibleUnable to be perceived
- unobservableCannot be detected
unseen · unperceived · unnoticeable · latent · subliminal · unapparent · hidden · concealed · veiled · obscured
planet
Star-orbiting spherical body
nebula · interstellar · celestial · satellite · planetoid · meteor
non-luminousluminous
Emitting or reflecting light
light-emitting · self-luminous · radiant · glowing · incandescent
luminous, luminosity, luminary, luminaries, luminescence, luminescent, illuminate, illumination, illuminated