protension
A drawing out, extension, or stretching; (alternatively) a duration (of time).
countable, dated, uncountable
Time, Protension or protensive quantity, called likewise Duration, is a necessary condition of thought. It may be considered both in itself and in the things which it contains.
Where it comes from
From Latin prōtēnsiō, from prōtendō (“draw out”).
Adapted from the Wiktionary entry protension (CC BY-SA 4.0).