simple past tense and past participle of elapse
(computing) A variable containing the date and time at which an event occurred, often included in a log to track the sequence of events.
(of time) having passed or slipped by;
To record the date and time of (an event, etc).
A timestamp is a sequence of characters or encoded information identifying when a certain event occurred, usually giving date and time of day, sometimes accurate to a small fraction of a second. The term derives from rubber stamps used in offices to stamp the current date, and sometimes time, in ink on paper documents, to record when the document was received.