[ 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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for focusses

  • Yet when one focusses the question to a matter of personal individuality, it does not stand the test.

    The Life Radiant|Lilian Whiting
  • The impulse of a supreme moment only focusses the habits and customs of a man's soul.

British Dictionary definitions for focusses


/ (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 focusses
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for focusses


[ fōkəs ]

n. pl. fo•cus•es


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

Science definitions for focusses


[ 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.