Definitions for focusˈfoʊ kəs

This page provides all possible meanings and translations of the word focus

Random House Webster's College Dictionary

fo•cus*ˈfoʊ kəs(n.)(pl.)-cus•es, -ci

  1. (n.)a central point, as of attention or activity.

  2. a point at which rays of light, heat, or other radiation meet after being refracted or reflected.

    Category: Physics

  3. the focal point of a lens. the focal length of a lens. the clear and sharply defined condition of an image. the position of a viewed object or the adjustment of an optical device necessary to produce a clear image:

    out of focus.

    Category: Optics

  4. (of a conic section) a point having the property that the distances from any point on a curve to it and to a fixed line have a constant ratio for all points on the curve.

    Category: Math

  5. the point of origin of an earthquake.

    Category: Geology

  6. the primary center from which a disease develops or in which it localizes.

    Category: Pathology

  7. (v.t.)to bring to a focus or into focus:

    to focus the lens of a camera.

  8. to concentrate:

    to focus one's thoughts.

  9. (v.i.)to become focused.

* (-sī, -kī).

Origin of focus:

1635–45; < L: fireplace, hearth


Princeton's WordNet

  1. focus, focusing, focussing, focal point, direction, centering(noun)

    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(noun)

    maximum clarity or distinctness of an image rendered by an optical system

    "in focus"; "out of focus"

  3. focus(noun)

    maximum clarity or distinctness of an idea

    "the controversy brought clearly into focus an important difference of opinion"

  4. focus, focal point, nidus(noun)

    a central point or locus of an infection in an organism

    "the focus of infection"

  5. stress, focus(noun)

    special emphasis attached to something

    "the stress was more on accuracy than on speed"

  6. focus, focal point(noun)

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

  7. focus(verb)

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

  8. concentrate, focus, center, centre, pore, rivet(verb)

    direct one's attention on something

    "Please focus on your studies and not on your hobbies"

  9. focus(verb)

    cause to converge on or toward a central point

    "Focus the light on this image"

  10. concenter, concentre, focalize, focalise, focus(verb)

    bring into focus or alignment; to converge or cause to converge; of ideas or emotions

  11. focus, focalize, focalise(verb)

    become focussed or come into focus

    "The light focused"

  12. focus, focalize, focalise, sharpen(verb)

    put (an image) into focus

    "Please focus the image; we cannot enjoy the movie"

Kernerman English Learner's Dictionary

  1. focus(noun)ˈfoʊ kəs

    the person or thing receiving most attention

    Changes to management will be the focus of our meeting.

  2. focusˈfoʊ kəs

    attention or emphasis that is given to sth

    The focus will be on controlling the spread of the disease.

  3. focusˈfoʊ kəs

    (of a photograph or film) looking clear/not clear

    None of the pictures were in focus.

  4. focus(verb)ˈfoʊ kəs

    to concentrate or give attention to

    Focus your attention on what is important.; Let's focus on the first paragraph.

  5. focusˈfoʊ kəs

    to look at sth until you can see it clearly

    I couldn't focus my eyes.; Focus on the smallest letters.

  6. focusˈfoʊ kəs

    to move part of a camera so that sth can be seen clearly through it

    Focus on the faces.


  1. focus(Noun)

    a point at which reflected or refracted rays of light converge.

    The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire.

  2. focus(Noun)

    a point of a conic at which rays reflected from a curve or surface converge.

  3. focus(Noun)

    The fact of the convergence of light on the photographic medium.

    Unfortunately, the license plate is out of focus in this image.

  4. focus(Noun)

    The quality of the convergence of light on the photographic medium.

    During this scene, the boyu2019s face shifts subtly from soft focus into sharp focus.

  5. focus(Noun)

    concentration of attention.

    I believe I can bring the high degree of focus required for this important job.

  6. focus(Noun)

    the exact point of where an earthquake occurs, in three dimensions.

    The earthquake's focus was at exactly 37 degrees north, 18 degrees south, seventy five meters below the ground.

  7. focus(Noun)

    The indicator of the currently active element in a user interface.

    Text entered at the keyboard or pasted from a clipboard is sent to the component which currently has the focus.

  8. focus(Noun)

    The most important word or phrase in a sentence or passage, or the one that imparts information

  9. focus(Verb)

    To cause (rays of light, etc) to converge at a single point.

  10. focus(Verb)

    To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.

    You'll need to focus the microscope carefully in order to capture the full detail of this surface.

  11. focus(Verb)

    To concentrate one's attention.

    Focus on passing the test.

  12. focus(Verb)

    To make (a liquid) less diluted.

  13. focus(Verb)

    To concentrate oneu2019s attention.

    If you're going to beat your competitors, you need to focus.

  14. Origin: focus, of unknown origin.

Webster Dictionary

  1. Focus(noun)

    a point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed; as, the focus of a lens or mirror

  2. Focus(noun)

    a point so related to a conic section and certain straight line called the directrix that the ratio of the distace between any point of the curve and the focus to the distance of the same point from the directrix is constant

  3. Focus(noun)

    a central point; a point of concentration

  4. Focus(verb)

    to bring to a focus; to focalize; as, to focus a camera


  1. FOCUS

    FOCUS is a computer programming language and development environment. It is a language used to build database queries, and is regarded as a fourth-generation programming language. Produced by Information Builders Inc., it was originally developed for data handling and analysis on the IBM mainframe. As newer systems were developed and smaller computers became more powerful, the available platforms for FOCUS were extended to personal computers and in 1997, to the World Wide Web in the WebFOCUS product.


  1. Focus

    Focus is a private, venture-funded company located in San Francisco founded in August 2005 by a team committed to making world class business expertise available to everyone. Today, Focus is the world’s fastest-growing business research and media company. When you visit, you will find high quality research, 1:1 analyst support, and a thriving community of business and technology professionals. Whether it’s data-driven product research, topical briefs, or real-time support, the information on Focus is sourced from real experts - professionals like you. Best of all, it’s free and available to anyone who wants help making better business decisions. That’s why millions of people have relied on the expertise of Focus to make better business decisions.

Editors Contribution

  1. Focus

    To direct one's attention for a specific purpose.

    You need to focus on your homework!

British National Corpus

  1. Spoken Corpus Frequency

    Rank popularity for the word 'focus' in Spoken Corpus Frequency: #2660

  2. Nouns Frequency

    Rank popularity for the word 'focus' in Nouns Frequency: #1135

  3. Verbs Frequency

    Rank popularity for the word 'focus' in Verbs Frequency: #423

Translations for focus

Kernerman English Multilingual Dictionary


the point at which rays of light meet after passing through a lens.

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