Crossword puzzle clue "two element tube"

Here are the possible solutions for two element tube clue

Answer
Clue
Relevancy
diode
Clue
Two-element electron tube
Two-element tube
Two-electrode tube
Definition
a type of electron tube
anode
Clue
Electron-tube element
Definition
a positively charged electrode
argon
Clue
Radio-tube element
Definition
an inert gaseous element
thorium
Clue
Element in vacuum tube filaments
xenon
Clue
TV-tube element
atom
Clue
Element element
Definition
the smallest particle in an element which can take part in a chemical reaction

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