Dictionary
de•fo•cus
Pronunciation: (dē-fō'kus), [key]
—v., -cused, -cus•ing or (esp. Brit.) -cussed, -cus•sing,
—n., pl. -cus•es.
—
v.t.
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).
—
v.i.
1. to lose or go out of focus.
2. to lose concentration or awareness; become distracted.
—
n.
the result of defocusing, as a blurred photographic image.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.