To temper by adjusting relative quantities, or blending qualities. / To mitigate, assuage. / (archaic) To regulate, arrange, organise.

present participle of attemper

Third-person singular simple present indicative form of attemper

simple past tense and past participle of attemper

Modified by admixture; well blended. / Of a moderate temperature; mild. / Having a moderate temperament; sober.

Tempered; proportioned; properly adapted.

(archaic) To attemper.

A device that regulates the temperature in a fluid system.

plural of attemperament

A tempering, or mixing in due proportion.