† aˈttemperatureObs. [f. L. attemperāt- after temperature: see attemper and -ure.] Due regulation of temper; attempered condition. 1635R. Brathwait Arcad. Pr. ii. 136 The happy disposure and attemperature of his distempered humour.1658Sir H. Slingsby Diary 198 This Christian attemperature and composure.