äktiviaikaa

äktiviaikaa is a neologism in Finnish used to denote the duration of an uninterrupted active state of a system, process, or organism, from the moment activation begins until activity ends.

Etymology: Formed from akt- (from aktiivinen/aktiivisuus) and aika (time). The form suggests a time-span associated with an active condition.

Usage: Employed in information technology to refer to single active sessions; in ecology to describe episodes of activity; in psychology to analyze effort phases.

Measurement: Typically measured with start and end timestamps; criteria for start: first user interaction or system event; end: last interaction before a defined inactivity threshold; thresholds vary by domain.

Example: In a mobile app, äktiviaikaa of a user session is the duration from first screen tap to the last interaction prior to a silence of 15 minutes.

Relation to other terms: similar to session length, dwell time, active period; distinct from total daily active time.

See also: Session length, dwell time, uptime, activity cycle.

References: The term is a contemporary Finnish concept with no universally established standard; usage appears in technology discussions, design guidelines, and glossary-style texts.