Definition of "timing"

(countable, obsolete) An occurrence or event.

(countable, uncountable) The regulation of the pace of e.g. an athletic race, the speed of an engine, the delivery of a joke, or the occurrence of a series of events.  examples

(countable, uncountable) The time when something happens.  examples

(uncountable) The synchronization of the firing of the spark plugs in an internal combustion engine.  examples

(countable) An instance of recording the time of something.  examples

present participle and gerund of time  examples