irreversibility

noun

1. (uncountable, usually)The quality of being irreversible; the lack of an ability to be reversed.

   “1806, Samuel Barnard, The Essence, Spirituality, and Glorious Issue, of the Religion of Christ Jesus, to All God's Chosen, W. Nicholson, page 279, Now if the irreversibility of God's gifts to his people, be considered, what joy for those who feel within a wicked heart.”

   “1911, Power, Hill Pub. Co., page 171, But because of irreversibilities in the engine, all of this theoretical conversion is not realized and some internal energy remains in the steam exhausting from the engine.”