Crossword puzzle clue "dark space region in a vacuum tube"

Here are the possible solutions for dark space region in a vacuum tube clue

Answer
Clue
Relevancy
anode
Clue
___ dark space (region in a vacuum tube)
Vacuum tube part
Vacuum tube part.
Definition
a positively charged electrode
greeneggsandham
Clue
Source of "Say! In the dark? Here in the dark! Would you, could you, in the dark?"
anodes
Clue
Vacuum tube terminals
Vacuum tube parts
Definition
ANODE, a positively charged electrode
argo
Clue
Gas in a vacuum tube
argon
Clue
Vacuum tube filler
Definition
an inert gaseous element

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