[f. prec. after Lat., or Eng. and Fr. analogies: see -MENT. Cf. OF. atemprement.] The bringing to a proper temper; mixture in due proportions.
1630. Brathwait, Eng. Gentl. (1641), 355. An attemperament of both those indisposed fancies by seasoning them both with an indifferent temper.
1836. Tracts for Times, lxvii. 5. The efficacy of the whole depends upon the attemperament of the several portions.
1864. Webster, Attemperment.