[f. prec. after Lat., or Eng. and Fr. analogies: see -MENT. Cf. OF. atemprement.] The bringing to a proper temper; mixture in due proportions.

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1630.  Brathwait, Eng. Gentl. (1641), 355. An attemperament of both those indisposed fancies … by seasoning them both with an indifferent temper.

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1836.  Tracts for Times, lxvii. 5. The efficacy of the whole depends upon the attemperament of the several portions.

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1864.  Webster, Attemperment.

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