defocus

American  

[dee-foh-kuhs] / diˈfoʊ kəs /

verb (used with object)

defocused, defocusing, defocussed, defocussing

1. to cause loss of focus of.

   The slightest movement will defocus the microscope.

2. to interrupt or disturb (concentration, attention, etc.).

3. to disturb the concentration or awareness of (someone).

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verb (used without object)

defocused, defocusing, defocussed, defocussing

1. to lose or go out of focus.

2. to lose concentration or awareness; become distracted.

noun

defocuses plural

1. the result of defocusing, as a blurred photographic image.

Other Word Forms

Inflected Forms

noun

• defocuses
  plural

Etymology

Origin of defocus

First recorded in 1930–35; de- + focus