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1. (n.) focus
a central point, as of attention or activity.
2. focus
a point at which rays of light, heat, or other radiation meet after being refracted or reflected.
3. focus
the focal point of a lens.
4. focus
the focal length of a lens.
5. focus
the clear and sharply defined condition of an image.
6. focus
the position of a viewed object or the adjustment of an optical device necessary to produce a clear image:
out of focus.
7. focus
(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.
8. focus
the point of origin of an earthquake.
9. focus
the primary center from which a disease develops or in which it localizes.
10. (v.t.) focus
to bring to a focus or into focus:
to focus the lens of a camera.
11. focus
to concentrate:
to focus one's thoughts.
12. (v.i.) focus
to become focused.
Etymology: (1635–45; < L: fireplace, hearth)
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| Definition of 'focus' |
Princeton's WordNet |
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1. (noun) 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. (noun) focus
maximum clarity or distinctness of an image rendered by an optical system
"in focus"; "out of focus"
3. (noun) focus
maximum clarity or distinctness of an idea
"the controversy brought clearly into focus an important difference of opinion"
4. (noun) focus, focal point, nidus
a central point or locus of an infection in an organism
"the focus of infection"
5. (noun) stress, focus
special emphasis attached to something
"the stress was more on accuracy than on speed"
6. (noun) focus, focal point
a point of convergence of light (or other radiation) or a point from which it diverges
7. (verb) focus
a fixed reference point on the concave side of a conic section
8. (verb) concentrate, focus, center, centre, pore, rivet
direct one's attention on something
"Please focus on your studies and not on your hobbies"
9. (verb) focus
cause to converge on or toward a central point
"Focus the light on this image"
10. (verb) concenter, concentre, focalize, focalise, focus
bring into focus or alignment; to converge or cause to converge; of ideas or emotions
11. (verb) focus, focalize, focalise
become focussed or come into focus
"The light focused"
12. (verb) focus, focalize, focalise, sharpen
put (an image) into focus
"Please focus the image; we cannot enjoy the movie"
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1. (noun) focus
the person or thing receiving most attention
Changes to management will be the focus of our meeting.
2. focus
attention or emphasis that is given to sth
The focus will be on controlling the spread of the disease.
3. focus
in/out of focus
(of a photograph or film) looking clear/not clear
None of the pictures were in focus.
4. (verb) focus
to concentrate or give attention to
Focus your attention on what is important.; Let's focus on the first paragraph.
5. focus
to look at sth until you can see it clearly
I couldn't focus my eyes.; Focus on the smallest letters.
6. focus
to move part of a camera so that sth can be seen clearly through it
Focus on the faces.
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| Definition of 'focus' |
Webster Dictionary |
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1. (noun) focus
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. (noun) focus
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. (noun) focus
a central point; a point of concentration
4. (verb) focus
to bring to a focus; to focalize; as, to focus a camera
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Sense: the point at which rays of light meet after passing through a lens.
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 Afrikaans: fokus |
 Arabic: بُؤْرَه |
 Bulgarian: фокус |
 Brazilian: foco |
 Czech: ohnisko |
 German: der Brennpunkt |
 Danish: fokus; brændpunkt |
 Greek: εστία |
 Spanish: foco |
 Estonian: fookus |
 Farsi: کانون |
 Finnish: polttopiste |
 French: foyer |
 Hebrew: מוֹקֵד |
 Hindi: केंद्र बिंदु |
 Croatian: fokus,žarište |
 Hungarian: gyújtópont |
 Indonesian: titik pusat, fokus |
 Icelandic: brennipunktur, fókus |
 Italian: fuoco |
 Japanese: 焦点 |
 Korean: 초점 |
 Lithuanian: židinys |
 Latvian: fokuss |
 Malay: titik pusat |
 Dutch: brandpunt |
 Norwegian: brennpunkt, fokus |
 Polish: ognisko |
 Persian: کانون |
 Pashto: محراق، فوکس |
 Portuguese: foco |
 Romanian: focar |
 Russian: фокус |
 Slovak: ohnisko |
 Slovenian: žarišče |
 Serbian: fokus |
 Swedish: fokus, brännpunkt |
 Thai: จุดรวมแสง |
 Turkish: odak |
 Taiwanese: 焦點 |
 Ukrainian: фокус |
 Urdu: شعاعوں یا لہروں کا نقطئہ |
 Vietnamese: giaođiểm; điểm hội tụ |
 Chinese: 焦点 |
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Definitions of focus 
