| Answer | Crossword Clue |
|---|---|
| INFRARED | Describing invisible rays |
| ULTRAVIOLET | Describing certain rays. |
| Answer | Crossword Clue |
|---|---|
| INFRARED | Describing invisible rays |
| ULTRAVIOLET | Describing certain rays. |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.