EN[ˈbæɹɪə(ɹ)] [-æɹiə(ɹ)]
  • A barrier or barricade is a physical structure which blocks or impedes something.
  • Barrier may also refer to:

    Definition of barrier in English Dictionary

  • NounPLbarriersSUF-ier
    1. A structure that bars passage.
      1. An obstacle or impediment.
        1. 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.
      2. A boundary or limit.
        1. (grammar) A node (in government and binding theory) said to intervene between other nodes A and B if it is a potential governor for B, c-commands B, and does not c-command A.
          1. (physiology) A separation between two areas of the body where specialized cells allow the entry of certain substances but prevent other substances to enter.
          2. More Examples
            1. Used in the Middle of Sentence
              • The same result was found when measuring the length of Jersey barrier or guardrail within the 800 m buffer in high- and low-kill UVC zones.
              • Methylene blue (MB, methylthioninium chloride) is a phenothiazine that crosses the blood brain barrier and acts as a redox cycler.
              • But last month, an engineer from the commission told a panel reviewing the relicensing application that the barrier had rusted so badly that it no longer met the national engineering code.
            2. Used in the Ending of Sentence
              • One model solved this issue by pseudotyping a lentivirus vector with rabies glycoprotein, which displays neurospecificity and is able to naturally cross the blood-brain barrier.
              • The driver lost control and the car struck the tire barrier.
          • Part-of-Speech Hierarchy
            1. Nouns
              • Countable nouns
            Related Links:
            1. en barriers
            2. en barriered
            3. en barrierless
            4. en barrierlike
            5. en barrier reef
            Source: Wiktionary
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            Meaning of barrier for the defined word.

            Grammatically, this word "barrier" is a noun, more specifically, a countable noun.
            Difficultness: Level 2
            Easy     ➨     Difficult
            Definiteness: Level 7
            Definite    ➨     Versatile