Noun

• S: (n) focus, focusing, focussing, focal point, direction, centering (the concentration of attention or energy on something) "the focus of activity shifted to molecular biology"; "he had no direction in his life"
• S: (n) focus (maximum clarity or distinctness of an image rendered by an optical system) "in focus"; "out of focus"
• S: (n) focus (maximum clarity or distinctness of an idea) "the controversy brought clearly into focus an important difference of opinion"
• S: (n) focus, focal point, nidus (a central point or locus of an infection in an organism) "the focus of infection"
• S: (n) stress, focus (special emphasis attached to something) "the stress was more on accuracy than on speed"
• S: (n) focus, focal point (a point of convergence of light (or other radiation) or a point from which it diverges)
• S: (n) focus (a fixed reference point on the concave side of a conic section)

Verb

• S: (v) concentrate, focus, center, centre, pore, rivet (direct one's attention on something) "Please focus on your studies and not on your hobbies"
• S: (v) focus (cause to converge on or toward a central point) "Focus the light on this image"
• S: (v) concenter, concentre, focalize, focalise, focus (bring into focus or alignment; to converge or cause to converge; of ideas or emotions)
• S: (v) focus, focalize, focalise (become focussed or come into focus) "The light focused"
• S: (v) focus, focalize, focalise, sharpen (put (an image) into focus) "Please focus the image; we cannot enjoy the movie"