decaffeination

The removal of caffeine.

Noun

  1. The removal of caffeine.
    • While Karson and I rested under a tree, I thought of all the things I’d tried, without success, to quell my fears: extreme exercise, decaffeination, deep breathing, blue-green algae. - 2009 September 20, Victor Lodato,...

Origin

From de- + caffeine + -ation.