Lewis & Short

rē̆frīgĕrātĭo, ōnis, f. [refrigero].

  1. I. Lit., a cooling, coolness: refrigeratio aestate, * Cic. Sen. 14, 46: aurae, Col. 11, 1, 16: caeli, Vitr. 6, 1, 3.
  2. II. Transf., a mitigation of diseases, Veg. 5, 56, 1.