| Answer | Crossword Clue |
|---|---|
| REACTOR | Nuclear plant structure |
| cells | microscopic biological structure containing nuclear material |
| cell | microscopic biological structure containing nuclear material |
| harden | to reinforce the structure of something to protect it from nuclear attack |
| hardens | to reinforce the structure of something to protect it from nuclear attack |
| reactor | An apparatus or structure in which fissile material can be made to undergo a controlled, self-sustaining nuclear reaction with the consequent release of energy |
