Lewis & Short

allĕvātĭo (adl-), ōnis, f. [1. allĕvo].

  1. I. A raising up, elevating: umerorum adlevatio atque contractio, Quint. 11, 3.
  2. II. Trop., an alleviating, assuaging, easing: ut (doloris) diuturnitatem adlevatio consoletur, Cic. Fin. 1, 12, 40: nullam adlevationem, id. Fam. 9, 1.