| Answer | Crossword Clue |
|---|---|
| OUT | ... of commission (unavailable) |
| CIRCULATION | Out of .. (unavailable) |
| entropy | a measure of unavailable energy |
| unavailability | the quality of being unavailable |
| entropies | ENTROPY, a measure of unavailable energy |
| entropic | pertaining to entropy (a measure of unavailable energy) |
| entropically | ENTROPIC, pertaining to entropy (a measure of unavailable energy) |
| downtime | Time during which a machine, esp. a computer, is out of action or unavailable for use |
