Lewis & Short

influxĭo, ōnis, f. [influo],

  1. I. a flowing in (late Lat.): materialis influxio in corpus, Macr. Somn. Scip. 1, 12, 10; Cael. Aur. Acut. 2, 37, 192.
  2. II. Transf., a cold, catarrh: ad nares, ad fauces, ad thoracem, Cael. Aur. Tard. 2, 7 et saep.