Lewis & Short

indīvīsĭbĭlis, e, adj. [2. in-divido], indivisible (post-class.): materia, Diom. p. 415 P.: anima, Tert. Anim. 51; Isid. 3, 5, 3.
Adv.: in-dīvīsĭbĭlĭter, indivisibly, Tert. Anim. 51.