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Barrier vs Barrierless - What's the difference?

barrier | barrierless |

As a noun barrier

is a structure that bars passage.

As an adjective barrierless is

lacking barriers.

barrier

English

(wikipedia barrier)

Noun

(en noun)
  • A structure that bars passage.
  • An obstacle or impediment.
  • * {{quote-magazine, title=Towards the end of poverty
    • , date=2013-06-01, volume=407, issue=8838, page=11, magazine=(The Economist) citation , passage=America’s poverty line is $63 a day for a family of four. In the richer parts of the emerging world $4 a day is the poverty barrier . But poverty’s scourge is fiercest below $1.25 ([…]): people below that level live lives that are poor, nasty, brutish and short.}}
  • A boundary or limit.

    • Derived terms

    * barrier reef * color barrier * crash barrier * diffusion-barrier * half-barrier * ice barrier * language barrier * racial barrier * sound barrier * tilt barrier * tire barrier * toll barrier

    barrierless

    English

    Alternative forms

    * barrier-less

    Adjective

    (-)
  • Lacking barriers
    • The world is increasingly barrierless .
  • (chemistry) Not requiring activation energy
  • * {{quote-book, 1992, R.A. Marcus & Prabha Siddarth, chapter=Theory of Electron Transfer Reactions and Comparison with Experiments, Photoprocesses in Transition Metal Complexes, Biosystems, and Other Molecules, editor=Elise Kochanski citation
    • , passage=The reaction is then barrierless , ie, ?G* = 0, and the rate constant is a maximum for the given ? (Figure 6). }}

    Derived terms

    * barrierlessly * barrierlessness