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killer application

British

noun

a highly innovative, very powerful, or extremely useful computer application; esp one sufficiently important as to justify purchase of the equipment or software

"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

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.

Its Starlink space-based broadband product was the first killer application, helping generate hundreds of billions in value for Musk and SpaceX shareholders.

From Barron's • Feb. 3, 2026

We have consumer devices available now, but given the maturity of the technology, it would take around that long to get to that type of killer application that you and I just talked about.

From The Verge • Jan. 11, 2022

He considers flexible electronics to be one possible "killer application."

From Science Magazine • Jan. 8, 2016

At the moment nobody knows what graphene’s killer application will be, but many of its properties point to its potential in electronics.

From Scientific American • Jun. 25, 2015

The killer application in the future will be to put an AIS receiver on a radar satellite.

From BBC • Jul. 20, 2012

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023