| Answer | Crossword Clue |
|---|---|
| ANODES | Positive poles in vacuum tubes. |
| NEON | Element in vacuum tubes |
| NEON | Inert gas in vacuum tubes |
| ARGON | Inert gas used in vacuum tubes |
| Answer | Crossword Clue |
|---|---|
| ANODES | Positive poles in vacuum tubes. |
| NEON | Element in vacuum tubes |
| NEON | Inert gas in vacuum tubes |
| ARGON | Inert gas used in vacuum tubes |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.