Crossword puzzle clue "fluorescent tube gas"

Here are the possible solutions for fluorescent tube gas clue

Answer
Clue
Relevancy
argon
Clue
Fluorescent tube gas
Fluorescent bulb gas
Gas in fluorescent bulbs
Fluorescent bulb filler
Fluorescent-lamp filler
Definition
an inert gaseous element
krypton
Clue
Gas in fluorescent lamps
Definition
(Greek) an element, an inert gas, also CRYPTON
neon
Clue
Gas in some fluorescent lights
Fluorescent lamp gas
Definition
a gaseous element

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