focus

the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life"

maximum clarity or distinctness of an image rendered by an optical system; "in focus"; "out of focus"

maximum clarity or distinctness of an idea; "the controversy brought clearly into focus an important difference of opinion"

a central point or locus of an infection in an organism; "the focus of infection"

special emphasis attached to something; "the stress was more on accuracy than on speed"

a point of convergence of light (or other radiation) or a point from which it diverges

a fixed reference point on the concave side of a conic section

direct one's attention on something; "Please focus on your studies and not on your hobbies"

cause to converge on or toward a central point; "Focus the light on this image"

bring into focus or alignment; to converge or cause to converge; of ideas or emotions

become focussed or come into focus; "The light focused"

put (an image) into focus; "Please focus the image; we cannot enjoy the movie"