English edit

Etymology edit

saponaceous +‎ -ness

Noun edit

saponaceousness (uncountable)

  1. The quality of being saponaceous.
    • 1767, John Mills, A New System of Practical Husbandry, volume 5, page 141:
      These oils, raised in different proportions, constitute what, in the must or wort, may be called the degree of saponaceousness.