Meaning of “focus” in the English Dictionary

"focus" in British English

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focusnoun [ C ]

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

focusverb

uk /ˈfəʊ.kəs/ us /ˈfoʊ.kəs/ -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 clear picture.

[ I or T ] If you focus your eyes, or if your eyes focus, you try to look directly 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 see clearly).

Phrasal verb(s)

(Definition of “focus” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"focus" in American English

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focusnoun

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

focus noun (MAIN OBJECT)

[ C ] also focal point the main object or interest, or the attention given something:

The focus of attention has shifted from the economy to improving the public schools.

focus noun (POSITION)

physics [ C/U ] the exact place or position where beams of light, heat, or sound meet after moving toward each other; focal point

earth science [ C/U ] A focus is also the exact position inside the earth where an earthquake begins.

in focus also out of focus

A photograph or an image seen 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 direct attention 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)

"focus" in Business English

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focusnoun [ C ]

uk /ˈfəʊkəs/ us 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 incentive system shifts the focus from the behavior of sales people 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 establishing real customer focus throughout the organization.

[ U ] the ability to give all your attention, time, and energy to a particular activity:

The enquiry concluded 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 /ˈfəʊkəs/ us -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 chief executive is moving to a new corporate headquarters 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 cutting costs.
focus entirely/exclusively/mainly on sth By the age of 30, he had decided to focus almost exclusively on corporate work.

(Definition of “focus” from the Cambridge Business English Dictionary © Cambridge University Press)