1. the act or process of making something lose focus or become blurry

1. present participle of defocus; making something blurry or out of focus

Examples

• The photographer was defocusing the background to make the subject stand out.
• Defocusing the camera lens created an artistic effect.
• The defocusing of the image made it difficult to read the text.
• She noticed the gradual defocusing of her vision without her glasses.
• The microscope required adjustment to prevent defocusing of the specimen.
• Defocusing can be used as a creative technique in portrait photography.