luminousgas
nounUK /ˈluːmɪnəs ɡæs/
US /ˈluːmɪnəs ɡæs/
A luminous gas is a gas that gives off its own light.
The glowing sign was filled with a luminous gas that shone bright green at night.
RELATED WORDS
OTHER MEANINGS
2. A gas that emits light when electricity passes through it, used in lamps and signs.
Neon signs work because a luminous gas inside the tube lights up when switched on.
3. A gas that glows in the dark after absorbing light.
The sticker on the wall used a luminous gas coating to shine softly in the dark.
4. Any gas that appears bright or glowing under certain conditions.
Scientists studied the luminous gas around the star to learn what it was made of.