›WORKPLACEto leave one company or organization and form or join another: defect from/to sthMany of our sales team have defected to the competition.
›COMMERCE, MARKETINGto stop buying a particular product or service and buy a different one instead: defect from/to sthMillions of customers defected to rival telecommunications companies.
›POLITICSto leave your country or group and join another because you disagree with the ideas of those in control: He's a pilot who defected to the United States.
defectionnoun[C or U]›Since the introduction of the new tariff, there have been fewer customer defections.