| Answer | Crossword Clue |
|---|---|
| ATOM | Place for protons |
| ATOM | Proton's place |
| ATOMICNUCLEUS | Proton's place |
| protophilic | having or involving an affinity for hydrogen ions (protons) |
| cosmotron | a large synchrotron used for accelerating protons to high energies |
| cosmotrons | COSMOTRON, a large synchrotron used for accelerating protons to high energies |
