Lewis & Short

ventōsĭtas, ātis, f. [ventosus] (postclass.).

  1. I. Lit., windiness, flatulence, ventosity: ventris, Cael. Aur. Tard. 4, 5: stomachi, App. Herb. 126.
  2. II. Trop., a puffing up, inflation, conceit, Fulg. Myth. 2, 17.