present participle of time

(countable, obsolete) An occurrence or event.

plural of timing

from time to time

(tennis) Reminder by the umpire for the players to continue playing after their pause. / The umpire's call in prizefights, etc.

(physics, usually uncountable) A dimension of spacetime with the opposite metric signature to space dimensions; the fourth dimension.

To measure or record the time, duration, or rate of. / To choose when something begins or how long it lasts. / (obsolete) To keep or beat time; to proceed or move in time.

Punctually or according to the schedule. / By installments, payments over a period of time. / (chess) By a player's running out of time.

Punctual or according to schedule.

(idiomatic) On occasion, sometimes.