cause to converge on or toward a central point
maximum clarity or distinctness of an idea
“the controversy brought clearly into focus an important difference of opinion”
maximum clarity or distinctness of an image rendered by an optical system
“in focus”
the concentration of attention or energy on something
“the focus of activity shifted to molecular biology”
direct one's attention on something
“Please focus on your studies and not on your hobbies”
bring into focus or alignment; to converge or cause to converge; of ideas or emotions
a central point or locus of an infection in an organism
“the focus of infection”
a point of convergence of light (or other radiation) or a point from which it diverges
put (an image) into focus
“Please focus the image; we cannot enjoy the movie”
a fixed reference point on the concave side of a conic section