Across
- 3. arranged in the order that events happened
- 5. treatment scheduled according to time or biological rhythms
- 7. to make things happen at the same time
Down
- 1. a device that records and measures time
- 2. a device for measuring time precisely
- 3. a record of events in time order
- 4. something out of its proper time period
- 6. the study or arrangement of events in time