attemperation

From attemper +‎ -ation.

attemperation (plural attemperations)

1. (archaic) The act of attempering or regulating.
   • 1609 (revised 1625), Francis Bacon, De Sapientia Veterum ('Wisdom of the Ancients')

     And if this be possible, it can certainly be effected no other way than by proper and exquisite attemperations of nature; as it were by the harmony and fine touching of the harp

• “attemperation”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.