1. (

• 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" ;

2. (

• focus ,

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

3. (

• focus ,

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

4. (

• focus ,
• focal_point ,
• nidus

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

5. (

• stress ,
• focus ,

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

6. (

• focus ,
• focal_point

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

7. (

• focus

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