
[Medieval Latin prīmum mōbile : prīmum, neuter of prīmus, first + mōbile, from neuter of mōbilis, movable (translation of Arabic al-muḥarrik al-'awwal : al-, the + muḥarrik, mover + 'awwal, first).]
(Latin, first in movement) In Aristotelian cosmology the first or outermost sphere of the heavens. The perfect, spherical rotation of this sphere is directly activated by love of God; the motion is as like the life of God as movement can be. See mover, unmoved.