Lewis & Short

vīsĭo, ōnis, f. [video], the act or sense of seeing, sight, vision.

  1. I. Lit.: ignesnostrae visioni occurrunt, App. de Mundo, p. 63 fin.; id. M. 2, p. 120, 32; 8, p. 203, 37: in caelestis sponsi visione requiescere, Greg. Mag. Homil. 2, 2, 8; 2, 2, 12.
    1. B. Transf., a thing seen, an appearance, apparition, a vision: adventicia, Cic. Div. 2, 58, 120; cf. Macr. Somn. Scip. 1, 3.
  2. II. Trop., an image of a thing in the mind; an idea, conception, notion: speciem dei percipi cogitationeeamque esse ejus visionem, ut, etc., Cic. N. D. 1, 37, 105: veri falsique, id. Ac. 2, 11, 33: falsa doloris, id. Tusc. 2, 18, 42.
    As a transl. of the Gr. φαντασία, Quint. 6, 2, 29.
    1. B. Transf., in jurid. lang., a supposition, a case: in propositā quaestione tribus visionibus relatis, etc., Dig. 5, 3, 25; so ib. 16, 1, 8; 17, 1, 29; 22, 3, 25 fin.; Tert. Anim. 9.