All 9 Uses

focus
in
True Believer, by Sparks
(Auto-generated)

Clearing his mind, he tried to focus his attention on the guest again.†
Chpt 1

focus = concentrate
It took an instant for the face to come into focus.†
Chpt 8 *

focus = a state where something has come into view or can be seen clearly
That she didn't seem to think of herself as different, or even notice the fact that others obviously did, reminded Jeremy of an aunt who had always been the most popular person at holiday dinners, simply because she focused her attention so completely on others.†
Chpt 9

focused = concentrated
Twenty-one In the days following Jeremy's unsuccessful meeting with the producers, he focused his attention on trying to return to his previous routines.†
Chpt 21 *
On Primetime Live, the videotape faded to black and the camera focused on Diane Sawyer and Jeremy, sitting across from each other once again.†
Chpt 1
He focused on the lid of his fruit cup as he spoke, suddenly reluctant to meet her gaze.†
Chpt 7
Jeremy forced himself to focus on chasing the tail end of the story.†
Chpt 11
Downtown appeared in sharp focus, in contrast to the dreamy, misty images he remembered.†
Chpt 22
Her eyes focused down on the graves again, and Jeremy realized he had no idea what she was thinking.†
Chpt 22

Definitions:

(1) (focus as in: Turn your focus to question #2.)
to direct attention or effort toward a single thing; or the ability to do so without getting distracted
(2) (focus as in: The focus of our study is...)
where attention is concentrated or directed
(3) (focus as in: bring into focus; or out of focus)
a state where something has come into view or can be seen clearly; or an adjustment made to permit a clear view
(4) (focus as with technical usage)
technical usage typically involves some sense of center or concentration such as:
- physics — a point where things come together such as the point where light rays meet
- geometry — a fixed reference point (as of a parabola)
- geology — the point of origin of an earthquake
See a comprehensive dictionary for other less common meanings.
(5) (meaning too rare to warrant focus)