| Answer | Crossword Clue |
|---|---|
| ZERO | Centigrade freezing point of water |
| ZERO | Centigrade freezing point |
| ZERO | Celsius freezing point of water |
| ZERO | Freezing point of water, in Celsius |
| ZERO | Freezing point of water, on the Celsius scale |
| ZERO | Centigrade freezing level |
