focus - definition in the American English Dictionary - Cambridge Dictionaries Online (US)

Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “focus”

See all translations

focus

noun  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. State officials urge continued focus on mosquito control.

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.

focus

verb [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)
What is the pronunciation of focus?
Add Cambridge dictionaries to your browser to your website

Definitions of “focus” in other dictionaries

Word of the Day

force

physical, especially violent, strength, or power

Word of the Day

They sometimes go here and they never go there: using adverbs of frequency

by Liz Walter,
April 29, 2015
Sometimes, always, often, never: these are some of the most common words in English.  Unfortunately, they are also some of the words that cause the most problems for students. Many of my students put them in the wrong place, often because that’s where they go in their own languages. They say things

Read More 

Evel abbreviation

May 04, 2015
English votes for English laws; the idea that only English (as opposed to Scottish, Welsh or Irish) MPs should be allowed to vote for laws that affect only England Yet these are the two principal constitutional proposals that have come from the Conservative party in its kneejerk response to Ukip’s English nationalism and

Read More