Definition of Focus in English :

Define Focus in English

Focus meaning in English

Meaning of Focus in English

Pronunciation of Focus in English

Focus pronunciation in English

Pronounce Focus in English


see synonyms of focus


1. centering, direction, focal point, focus, focusing, focussing

the concentration of attention or energy on something

Example Sentences:
'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

Example Sentences:
'in focus'
'out of focus'

3. focus

maximum clarity or distinctness of an idea

Example Sentences:
'the controversy brought clearly into focus an important difference of opinion'

4. focal point, focus, nidus

a central point or locus of an infection in an organism

Example Sentences:
'the focus of infection'

5. focus, stress

special emphasis attached to something

Example Sentences:
'the stress was more on accuracy than on speed'

6. focal point, focus

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


8. center, centre, concentrate, focus, pore, rivet

direct one's attention on something

Example Sentences:
'Please focus on your studies and not on your hobbies'

9. focus

cause to converge on or toward a central point

Example Sentences:
'Focus the light on this image'

10. concenter, concentre, focalise, focalize, focus

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

11. focalise, focalize, focus

become focussed or come into focus

Example Sentences:
'The light focused'

12. focalise, focalize, focus, sharpen

put (an image) into focus

Example Sentences:
'Please focus the image; we cannot enjoy the movie'

WordNet Lexical Database for English. Princeton University. 2010.


see synonyms of focus
noun plural -cuses or -ci (-saɪ, -kaɪ, -kiː)
a point of convergence of light or other electromagnetic radiation, particles, sound waves, etc, or a point from which they appear to diverge
2.  another name for focal point (sense 1), focal length
3. optics
the state of an optical image when it is distinct and clearly defined or the state of an instrument producing this image
the picture is in focus
the telescope is out of focus
a point upon which attention, activity, etc, is directed or concentrated
5. geometry
a fixed reference point on the concave side of a conic section, used when defining its eccentricity
the point beneath the earth's surface at which an earthquake or underground nuclear explosion originates
Compare epicentre
7. pathology
the main site of an infection or a localized region of diseased tissue
verb -cuses, -cusing, -cused, -cusses, -cussing or -cussed
to bring or come to a focus or into focus
9. (transitive; often foll by on)
to fix attention (on); concentrate

Collins English Dictionary. Copyright © HarperCollins Publishers


see synonyms of focus
nounWord forms: plural ˈfocuses or ˈfoˌci (ˈfoʊˌsaɪ ; fōˈsīˌ)
the point where rays of light, heat, etc. or waves of sound come together, or from which they spread or seem to spread; specif., the point where rays of light reflected by a mirror or refracted by a lens meet (called real focus) or the point where they would meet if prolonged backward through the lens or mirror (called virtual focus)
focal length
an adjustment of the focal length to make a clear image
to bring a camera into focus
any center of activity, attention, etc.
a part of the body where a disease process, as an infection, tumor, etc., is localized or most active
the starting point of an earthquake
7.  Ancient Mathematics
either of the two fixed points used in determining an ellipse
any analogous point for a parabola or hyperbola
see also eccentricity (sense 3)
verb transitiveWord forms: ˈfocused or ˈfocussed, ˈfocusing or ˈfocussing
to bring into focus
to adjust the focal length of (the eye, a lens, etc.) in order to produce a clear image
to fix or settle on one thing; concentrate
to focus one's attention on a question
verb intransitive
to meet at a focus
to adjust one's eye or a lens so as to make a clear image
to direct one's thoughts or efforts; concentrate

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


see synonyms of focus
n. pl. fo·cus·es or fo·ci (-sī, -kī)
a. The distinctness or clarity of an image rendered by an optical system.
b. The state of maximum distinctness or clarity of such an image: in focus; out of focus.
c. An apparatus used to adjust the focal length of an optical system in order to make an image distinct or clear: a camera with automatic focus.
a. A point at which rays of light or other radiation converge or from which they appear to diverge, as after refraction or reflection in an optical system: the focus of a lens. Also called focal point.
a. A center of interest or activity: "Precisely how diet affects E. coli in livestock is the focus of current research" (Cindy Engel).
b. Close or narrow attention; concentration: "He was forever taken aback by [New York's] pervasive atmosphere of purposefulnessthe tight focus of its drivers, the brisk intensity of its pedestrians" (Anne Tyler).
c. A condition in which something can be clearly apprehended or perceived: couldn't get the problem into focus.
4. Medicine The region of a localized bodily infection or disease.
5. Geology The point of origin of an earthquake.
6. Mathematics A fixed point whose relationship with a directrix determines a conic section.
v. fo·cused, fo·cus·ing, fo·cus·es or fo·cussed or fo·cus·sing or fo·cus·ses
1. To cause (light rays, for example) to converge on or toward a central point; concentrate.
a. To render (an object or image) in clear outline or sharp detail by adjustment of one's vision or an optical device; bring into focus.
b. To adjust (a lens, for example) to produce a clear image.
3. To direct toward a particular point or purpose: focused all their attention on finding a solution to the problem.
1. To converge on or toward a central point of focus; be focused.
2. To adjust one's vision or an optical device so as to render a clear, distinct image.
3. To concentrate attention or energy: a campaign that focused on economic issues.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.