Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “focus”

focus

noun [C] uk   /ˈfəʊ.kəs/ us    /ˈfoʊ-/ (plural focuses or formal foci)

focus noun [C] (CENTRE)

C1 the main or central point 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 outrageous evening wear. The media focus on politicians' private lives inevitably switches the attention away from the real issues.

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 lens be in/out of focus describes a photograph that is clear/not clear

focus

verb 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 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).
(Definition of focus from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of focus?
Browse related topics

You are looking at an entry to do with Paying attention and being careful, but you might be interested in these topics from the Attention and care topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “focus” in other dictionaries

Word of the Day

maiden

a girl or young woman

Word of the Day

Countability – grammar codes

by Dom Glennon​​,
November 26, 2014
Advices and informations Have you ever noticed strange codes in square brackets on entries in Cambridge Dictionaries Online and wondered what they mean? These are grammar codes, giving you a brief summary of how that word behaves grammatically. More information can be obtained by hovering your cursor over the code, and there’s

Read More 

ped-text verb

November 24, 2014
to text someone while walking I’m ped-texting, I’m looking down at my phone, 75 percent of the time.

Read More