1. the act of removing someone from a position of candidacy or membership, especially in politics or organizational contexts
Usage: commonly used in British politics; often refers to a political party's decision not to renominate an incumbent candidate
2. the action of unchecking or removing a selection in a computer interface or application
Usage: technical usage; common in computing and software contexts

Examples

• The party's deselection of the long-serving MP shocked many of his supporters.
• Her deselection as a candidate came after months of internal party disputes.
• The deselection process was controversial and drew criticism from multiple factions.
• To deselect multiple files, hold Ctrl and click on each item, or use the deselection option in the menu.
• The software allows for quick deselection of all items with a single button.
• Deselection of the checkbox will disable the feature.
• The committee voted on the deselection of three board members.
• Accidental deselection of the text can be undone with Ctrl+Z.