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irruptive (comparative more irruptive, superlative most irruptive)

  1. Having the quality of irrupting or making irruptions.


irruptive (plural irruptives)

  1. An organism that is suddenly more prevalent in a region, due to irruption.
    • 1988 June 17, Jerry Sullivan, “Field & Street”, in Chicago Reader[1]:
      Connor advises birders to wait until late in the winter to look for irruptives.