| Answer | Crossword Clue |
|---|---|
| methylxanthine | a methylated xanthine derivative, such as caffeine, theobromine, or theophylline |
| Answer | Crossword Clue |
|---|---|
| methylxanthine | a methylated xanthine derivative, such as caffeine, theobromine, or theophylline |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.