Meaning of DEFOCUS in English

I. (ˈ)dē, də̇ˌ verb

Etymology: de- + focus (I)

transitive verb

: to cause (as a beam of radiation or a lens) to be out of focus

defocused his eye

a defocused image

intransitive verb

: to lose accuracy of focus : become defocused

II. " noun

: a result of defocusing ; especially : an image (as on motion-picture film) deliberately blurred for dramatic effect

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.