English edit

Etymology edit

activation +‎ -less

Adjective edit

activationless (not comparable)

  1. (physical chemistry, physics) Having an activation energy near 0
    • 1986, Lev Isaevich Krishtalik, (Please provide the book title or journal name)[1], →ISBN, page 73:
      In this case, ionization is activationless, i.e. its rate constant is extemely large and independent of potential.