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Vacuum tube with three elements Crossword Clue

6 letters · New York Times · Wednesday, April 7, 1999 · 48-Down

Appeared in 1 New York Times Crossword: Wednesday, April 7, 1999.

Exact puzzle match · New York Times · April 7, 1999 · 48-Down · 6 letters

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What does this clue mean?

a thermionic vacuum tube having three electrodes; fluctuations of the charge on the grid control the flow from cathode to anode which makes amplification possible

noun

WordNet® (Princeton University)

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