An Etymological Dictionary of Astronomy and Astrophysics

Lasting, existing, serving, or effective for a time only; not permanent.

Etymology (EN): From L. temporarius “according to circumstances, of seasonal character, lasting a short time,” from tempus (genitive temporis) “time, season.”

Etymology (PE): Tâmenvâr, from tâmen “time”, → temporal, + -vâr suffix denoting suiting, befitting, resembling, in the manner of.