focus Definition in the Cambridge English Dictionary
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Definition of “focus” - English Dictionary

Definition of "focus" - American English Dictionary

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focusnoun

 us   /ˈfoʊ·kəs/ (plural focuses or foci  /ˈfoʊ·sɑɪ, -kɑɪ/ )

focus noun (MAIN OBJECT)

[C] (also focal point) the ​mainobject or ​interest, or the ​attention given something: The focus of ​attention has ​shifted from the ​economy to ​improving the ​publicschools. Stateofficialsurgecontinued focus on ​mosquitocontrol.

focus noun (POSITION)

physics [C/U] the ​exactplace or ​position where ​beams of ​light, ​heat, or ​soundmeet after ​moving toward each other; focal point earth science [C/U] A focus is also the ​exactposition inside the ​earth where an earthquakebegins.in focus (also out of focus) A ​photograph or an ​imageseen through a ​device with a lens , such as a microscope , telescope , or ​camera, that is in focus is ​clear and one that is out of focus is not ​clear.

focusverb [I/T]

 us   /ˈfoʊ·kəs/

focus verb [I/T] (DIRECT ATTENTION)

to ​directattention toward something or someone: [I] Tonight’s ​program focuses on ​homelessness.

focus verb [I/T] (ADJUST)

to ​adjust something in ​order to ​see more ​clearly: [T] I focused the ​binoculars on the ​bird on a ​branch of the ​tree.
(Definition of focus from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "focus" - British English Dictionary

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focusnoun [C]

uk   /ˈfəʊ.kəs/  us   /ˈfoʊ-/ (plural focuses or formal foci )

focus noun [C] (CENTRE)

C1 the ​main or ​centralpoint of something, ​especially of ​attention or ​interest: I ​think Dave ​likes to be the focus of ​attention. The ​main focus of ​interest at the ​fashion show was ​Christian Lacroix's ​outrageouseveningwear. The ​media focus onpoliticians' ​privatelivesinevitablyswitches the ​attention away from the ​realissues.
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focus noun [C] (SCIENCE)

(in ​physics) the ​point where ​waves of ​light or ​sound that are ​moving towards each other ​meet: the focus of a ​lensbe in/out of focus used to say that a ​photograph is ​clear/not ​clear

focusverb

uk   /ˈfəʊ.kəs/  us   /ˈfoʊ-/ (-s-)
[T] If you focus a ​device such as a ​camera or microscope, you ​move a ​device on the lens so that you can ​see a ​clearpicture. [I or T] If you focus ​youreyes, or if ​youreyes focus, you ​try to ​lookdirectly at an ​object so that you can ​see it more ​clearly: When they first took the ​bandages off, she/her ​eyes couldn't focus ​properly (= she couldn't ​seeclearly).
Phrasal verbs
(Definition of focus from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

Definition of "focus" - Business English Dictionary

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focusnoun [C]

uk   us   /ˈfəʊkəs/ (plural focuses, formal foci)
[C] the ​central or most important thing for a ​company or ​organization: the main/primary/principal focus of sb/sth The ​primary focus of a ​manager is on ​efficiency.turn/switch/shift the focus from sth to sth A bonus-based ​incentivesystemshifts the focus from the ​behavior of ​salespeople to the ​results they ​deliver.focus on sth The company's Five-Year Plan continues the ​dual focus on use and ​production.
[U] the ​act of giving ​attention to a particular ​group of ​customers or a particular ​activity: The ​restructuring was ​aimed at ​establishingreal customer focus throughout the ​organization.
[U] the ​ability to give all your ​attention, ​time, and ​energy to a particular ​activity: The ​enquiryconcluded that the ​failure to ​address the ​issue beforehand was the ​result of a lack of focus and ​drive by the ​board.

focusverb [I or T]

uk   us   /ˈfəʊkəs/ (-s- or -ss-)
to give a lot of ​attention, ​time, ​energy, etc. to one particular ​group of ​customers or a particular ​activity: focus on sth The company's ​chiefexecutive is ​moving to a new ​corporateheadquarters in Dubai to focus on ​business in the Middle East, Africa, ​Europe, and Asia.focus attention/efforts/resources on sth We shall continue to focus our ​efforts on ​cuttingcosts.focus entirely/exclusively/mainly on sth By the age of 30, he had decided to focus almost ​exclusively on ​corporatework.
(Definition of focus from the Cambridge Business English Dictionary © Cambridge University Press)
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