1. removing something from a selected state or group; canceling a previous selection
Usage: computing; technology
2. removing a political candidate from consideration or nomination
Usage: politics; British

Examples

• She is deselecting the files she no longer needs.
• The software allows deselecting multiple items at once.
• Try deselecting all options and starting over.
• The party is deselecting the incumbent candidate.
• Deselecting that checkbox will disable the feature.
• He spent time deselecting unwanted photos from the album.