An instrument that keeps time exactly enough to be trusted. Its worth is entirely in not drifting.

How long a thing lasts. The measure of a happening from its start to its end.

The minutes-and-seconds clock face pattern — time's short dress for durations, as a format string speaks it.

Millisecond — a thousandth of a second. The unit at which interface timing becomes felt.

Short form of second, and of section. A named abbreviation rather than a concept.

From that time onward — the joining word that anchors now to a then.