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Alternative forms[edit]

  • barrier-less


barrier +‎ -less


barrierless (not comparable)

  1. Lacking barriers
    The world is increasingly barrierless.
  2. (chemistry) Not requiring activation energy
    • 1992, R.A. Marcus & Prabha Siddarth, “Theory of Electron Transfer Reactions and Comparison with Experiments”, in Elise Kochanski, editor, Photoprocesses in Transition Metal Complexes, Biosystems, and Other Molecules[1], page 63:
      The reaction is then barrierless, ie, ΔG* = 0, and the rate constant is a maximum for the given λ (Figure 6).

Derived terms[edit]