| Answer | Crossword Clue |
|---|---|
| aplanat | an distortion-free lens |
| aplanat | an aplanatic lens |
| Answer | Crossword Clue |
|---|---|
| aplanat | an distortion-free lens |
| aplanat | an aplanatic lens |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.