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irruptive

American  
[ih-ruhp-tiv] / ɪˈrʌp tɪv /

adjective

  1. of, relating to, or characterized by irruption.

  2. irrupting or tending to irrupt.

  3. Petrology. intrusive.


irruptive British  
/ ɪˈrʌptɪv /

adjective

  1. irrupting or tending to irrupt

  2. of, involving, or causing irruption

  3. obsolete (of igneous rocks) intrusive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of irruptive

First recorded in 1585–95; irrupt + -ive

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Winter birders looking for unusual birds often pursue irruptive species.

From Washington Times • Jan. 31, 2015

While rare and irruptive species are undeniably appealing to avid birders, the winter also provides a great time to see a variety of more common but no less fascinating species.

From Washington Times • Jan. 31, 2015

“I’m not sure if pine grosbeak are irruptive, but maybe that is part of the equation as they only show up in the valley like this once every 10 years.”

From Washington Times • Jan. 31, 2015

Red crossbills, white-winged crossbills and hoary redpolls are irruptive species that have made an appearance in the Gallatin Valley this winter.

From Washington Times • Jan. 31, 2015

But to James something so conventional and rationalistic seemed hardly experience and hardly religious; he was thinking only of irruptive visions and feelings as interpreted by the mystics who had them.

From Character and Opinion in the United States by Santayana, George

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