irruptive (comparative more irruptive, superlative most irruptive)
- Having the quality of irrupting or making irruptions.
irruptive (plural irruptives)
- An organism that is suddenly more prevalent in a region, due to irruption.
1988 June 17, Jerry Sullivan, “Field & Street”, in Chicago Reader:
- Connor advises birders to wait until late in the winter to look for irruptives.