glowinggas

noun
UK /ˈɡləʊ.ɪŋ ɡæs/
US /ˈɡloʊ.ɪŋ ɡæs/

A glowing gas is a gas that gives off bright light.

The sign in the window was made of glowing gas that shone red at night.


OTHER MEANINGS

2. A gas that emits light because it is heated to a very high temperature.

The glowing gas inside the lamp lit up the whole room.

3. A gas that shines when electricity passes through it.

Neon signs work because glowing gas inside the tubes lights up.

4. A gas that gives off a soft light in the dark, like fireflies.

The swamp looked magical with its glowing gas drifting over the water.