An Etymological Dictionary of Astronomy and Astrophysics

That can be perceived by the senses.

Etymology (EN): M.E., from O.Fr. from L. sensibilis “having feeling, perceptible by the senses,” from sensus, p.p. of sentire “perceive, feel,” → sense.

Etymology (PE): Hess-pazir, from hess, → sense + pazir, → -able; hessidani, from hessidan (v.) + -i, → -able.