consumation

From consum(e) +‎ -ation.

consumation (uncountable)

1. (rare) Consumption; the act of consuming or depleting something.
   • 1919 December 12, Charles L[athrop] Parsons, “The American Chemical Society, V”, in Science, volume L, number 1302, Lancaster, P.A., Garrison, N.Y., New York, N.Y.: The Science Press, →ISSN, →OCLC, page 547:

     Nitrate of soda is itself an important ingredient of fertilizer, and any decrease in the consumation of nitrate for making acid should react in favor of a decreased demand, and so of a lower price, for nitrate of soda.

• Not to be confused with consummation (“the act of consummating; the first act of sexual intercourse in a relationship”).

• “consumation, n.”, in OED Online  ⁠, Oxford: Oxford University Press, launched 2000.