1. A linear projection of when events occur from the past, the present, or are projected into the future: Government officials have hopes that in time the political resolution of problems among nations will occur instead of resorting to military solutions.
2. A lapse between the occurrences of events: Norbert passed the time waiting for the bus to arrive by reading and chatting with others who were waiting with him.
3. A manner, typically involving numbers that indicate when an event, etc. took place or may have taken place: Jane asked, "Jim, how much time has passed since we last got together?"
4. The indication of a period or interval of surrounding events: The past five years have been hard times for the factory.
5. An indication of when prevailing events or trends occur: By hiring a woman CEO, the organization was certainly in tune with the times.
6. Specific seasons or opportunities for events that take place: The village was celebrating harvest time by having a fair.
7. The occasion or opportunity in which to complete an activity: Mother said, "Mildred, there will be plenty of time to finish your homework."
8. An instance or specific occasion in which something happens: The time of little Glenda's birth was midnight on New Year’s Eve.

1. To choose an hour, a day, a month, a year, etc. when something is to happen at an indicated schedule: Matthew timed his trip to coincide with the summer vacation at his university.
2.To make something happen at a certain minute: The senator timed his speech to take place just before the congressional recess was to take place for the summer.

The official system of mean solar time, used to calculate data for tables of changing astronomical phenomena (ephemerides).