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
Hint 2clue words
Early: at or near the beginning of a period of time or course of events or before the usual or expected time
Radio: indicating radiation or radioactivity
Part: something determined in relation to something that includes it
What is the 6-letter answer to "Early radio part" crossword clue?
The answer to the "Early radio part" crossword clue is TRIODE. This answer contains 6 letters and was confirmed in the Wall Street Journal puzzle.
Which crossword used "Early radio part" clue?
This crossword clue most recently appeared in the Wall Street Journal puzzle on November 7, 2025. Daily crossword puzzles often reuse popular clues, so this clue may appear again in future puzzles from the same publication or others.
What is the meaning of TRIODE?
The word TRIODE means: 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. This definition provides context for why it fits the crossword clue "Early radio part".