noun \ˈfō-kəs\

: a subject that is being discussed or studied : the subject on which people's attention is focused

: a main purpose or interest

: a point at which rays of light, heat, or sound meet or from which they move apart or appear to move apart; especially : the point at which an image is formed by a mirror, a lens, etc.

plural fo·ci \ˈfō-ˌalso -ˌkī\ also fo·cus·es

Full Definition of FOCUS

a :  a point at which rays (as of light, heat, or sound) converge or from which they diverge or appear to diverge; specifically :  the point where the geometrical lines or their prolongations conforming to the rays diverging from or converging toward another point intersect and give rise to an image after reflection by a mirror or refraction by a lens or optical system
b :  a point of convergence of a beam of particles (as electrons)
a :  focal length
b :  adjustment for distinct vision; also :  the area that may be seen distinctly or resolved into a clear image
c :  a state or condition permitting clear perception or understanding <tried to bring the issues into focus>
d :  direction 6c <the team lost focus>
:  one of the fixed points that with the corresponding directrix defines a conic section
:  a localized area of disease or the chief site of a generalized disease or infection
a :  a center of activity, attraction, or attention <the focus of the meeting was drug abuse>
b :  a point of concentration
:  the place of origin of an earthquake or moonquake
:  directed attention :  emphasis
fo·cus·less \-ləs\ adjective
in focus
:  having or giving the proper sharpness of outline due to good focusing
out of focus
:  not in focus

Examples of FOCUS

  1. He's successful, but he feels that his life lacks focus.
  2. His life lacks a focus.

Origin of FOCUS

New Latin, from Latin, hearth
First Known Use: 1644

Other Pictures (on film) Terms

daguerreotype, emulsion, fill, sepia, still, stop

Rhymes with FOCUS



: to cause (something, such as attention) to be directed at something specific

: to direct your attention or effort at something specific

: to adjust (something, such as a lens or a camera) to make an image clear

fo·cused also fo·cussedfo·cus·ing also fo·cus·sing

Full Definition of FOCUS

transitive verb
a :  to bring into focus
b :  to adjust the focus of (as the eye or a lens)
:  to cause to be concentrated <focused their attention on the most urgent problems>
:  to bring (as light rays) to a focus :  concentrate
intransitive verb
:  to come to a focus :  converge
:  to adjust one's eye or a camera to a particular range
:  to concentrate attention or effort
fo·cus·able \-kə-sə-bəl\ adjective
fo·cus·er noun

Examples of FOCUS

  1. She has an amazing ability to focus for hours at a time.
  2. I wasn't able to focus the camera.
  3. I wasn't able to get the camera to focus.

First Known Use of FOCUS



Next Word in the Dictionary: focus group
Previous Word in the Dictionary: fo'c'sle
All Words Near: focus

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