Dictionary definition · focus
noun
- the concentration of attention or energy on something"the focus of activity shifted to molecular biology"
- maximum clarity or distinctness of an image rendered by an optical system"in 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
verb
- 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"
Source: Open English WordNet (CC BY 4.0).