| Answer | Crossword Clue |
|---|---|
| pliotron | any hot-cathode vacuum tube having an anode and one or more grids |
| tetrode | a vacuum tube with a cathode, an anode, a control grid, and an additional grid or other electrode |
| Answer | Crossword Clue |
|---|---|
| pliotron | any hot-cathode vacuum tube having an anode and one or more grids |
| tetrode | a vacuum tube with a cathode, an anode, a control grid, and an additional grid or other electrode |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.