focus

[ foh-kuhs ]
/ ˈfoʊ kəs /

noun, plural fo·cus·es, fo·ci [foh-sahy, -kahy] /ˈfoʊ saɪ, -kaɪ/.

verb (used with object), fo·cused, fo·cus·ing or (especially British) fo·cussed, fo·cus·sing.

to bring to a focus or into focus; cause to converge on a perceived point: to focus the lens of a camera.
to concentrate: to focus one's thoughts; to focus troop deployment in the east.

verb (used without object), fo·cused, fo·cus·ing or (especially British) fo·cussed, fo·cus·sing.

to be or become focused: My eyes have trouble focusing on distant objects.
to direct one's attention or efforts: Students must focus in class.

Nearby words

  1. foch,
  2. foch, ferdinand,
  3. foci,
  4. focometer,
  5. focsani,
  6. focus group,
  7. focus puller,
  8. focused,
  9. focused strategy,
  10. focusing cloth

Origin of focus

1635–45; < Latin: fireplace, hearth

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for focus


British Dictionary definitions for focus

focus

/ (ˈfəʊkəs) /

noun plural -cuses or -ci (-saɪ, -kaɪ, -kiː)

verb -cuses, -cusing, -cused, -cusses, -cussing or -cussed

to bring or come to a focus or into focus
(tr often foll by on) to fix attention (on); concentrate
Derived Formsfocusable, adjectivefocuser, noun

Word Origin for focus

C17: via New Latin from Latin: hearth, fireplace

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for focus
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for focus

focus

[ fōkəs ]

n. pl. fo•cus•es

v.


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for focus

focus

[ fōkəs ]

Plural focuses or foci (sī′, fōkī′)

The degree of clarity with which an eye or optical instrument produces an image.
See focal point.
A central point or region, such as the point at which an earthquake starts.
Mathematics A fixed point or one of a pair of fixed points used in generating a curve such as an ellipse, parabola, or hyperbola.
The region of a localized bodily infection or disease.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.