Irruptive

adj, noun

Definitions

Adjective
  1. 1
    Having the quality of irrupting or making irruptions.
Adjective
  1. 1
    of igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro wordnet
Noun
  1. 1
    An organism that is suddenly more prevalent in a region, due to irruption.

    "Connor advises birders to wait until late in the winter to look for irruptives."

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