Electron tube
The crossword clue "Electron tube" is answered by DIODE, a 5-letter entry. Used 60 times across 38 distinct years; most recently in 2025; first recorded in 1965. It appears in 14 publications in the xd corpus. Every figure on this page comes from the collection data itself.
The answer
DIODE
5 letters. See every clue for this answer on the DIODE answer page.
Used 60 times across 38 distinct years; most recently in 2025; first recorded in 1965. It appears in 14 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this collection link to their own answer page.
- TRIODE (8 uses in xd)
- TETRODE (2 uses in xd)
- BIODE (1 uses in xd)
- BULB (1 uses in xd)
Other clues for DIODE
Every other clue in this collection answered by DIODE, most used first.
- Part of LED - used 57 times, most recently in 2026
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Tube-shaped pasta - PENNE, used 48 times
- Surgical tube - STENT, used 46 times
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