Focus...

noun
1. the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life"
2. maximum clarity or distinctness of an image rendered by an optical system; "in focus"; "out of focus"
3. maximum clarity or distinctness of an idea; "the controversy brought clearly into focus an important difference of opinion"
4. a central point or locus of an infection in an organism; "the focus of infection"
5. special emphasis attached to something; "the stress was more on accuracy than on speed" [syn: stress]
6. a point of convergence of light (or other radiation) or a point from which it diverges
7. a fixed reference point on the concave side of a conic section

verb
1. direct one's attention on something; "Please focus on your studies and not on your hobbies" [syn: concentrate]
2. cause to converge on or toward a central point; "Focus the light on this image" [ant: blur]
3. bring into focus or alignment; to converge or cause to converge; of ideas or emotions [syn: concenter]
4. become focussed or come into focus; "The light focused" [ant: blur]
5. put (an image) into focus; "Please focus the image; we cannot enjoy the movie" [ant: blear]

WordNet® 3.0, © 2006 by Princeton University.