| Answer | Crossword Clue |
|---|---|
| TRIODES | Certain electron tubes |
| DIODES | Electron tubes. |
| TETRODES | Electron tubes. |
| DIODES | Electron tubes |
| TRIODES | Electron tubes |
| DIODES | Some electron tubes |
| Answer | Crossword Clue |
|---|---|
| TRIODES | Certain electron tubes |
| DIODES | Electron tubes. |
| TETRODES | Electron tubes. |
| DIODES | Electron tubes |
| TRIODES | Electron tubes |
| DIODES | Some electron tubes |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.