noun, plural fo·cus·es, fo·ci [foh-sahy, -kahy] /ˈfoʊ saɪ, -kaɪ/.
- the focal point of a lens, on which rays converge or from which they deviate.
- the focal length of a lens; the distance from a focal point to a corresponding principal plane.
- the clear and sharply defined condition of an image.
- the position of a viewed object or the adjustment of an optical device necessary to produce a clear image: in focus; out of focus.
verb (used with object), fo·cused, fo·cus·ing or (especially British) fo·cussed, fo·cus·sing.
verb (used without object), fo·cused, fo·cus·ing or (especially British) fo·cussed, fo·cus·sing.
Origin of focus
Synonyms for focus
Related Words for focusestarget, spotlight, fixate, direct, concentrate, put, meet, attract, limelight, core, center, hub, heart, headquarters, seat, locus, polestar, cynosure, centralize, join
Examples from the Web for focuses
Contemporary Examples of focuses
Obama has the authority on immigration and Rick Santorum focuses on the wrong numbers.Fact-Checking the Sunday Shows: November 23
November 23, 2014
She focuses a lot of her time on after school activities, such as student council and the yearbook committee.Blessed or Cursed? Child Prodigies Reveal All
November 17, 2014
Instead, Cooke focuses mainly on her heavy drinking, because it had a significant effect on her performances.Janis Joplin’s Kozmic Blues
November 8, 2014
The premise comes and goes, however, and even the rest of “Clouds” focuses more on sensuality than sci-fi.Prince Returns From the Wilderness and, Thankfully, Is as Restless as Ever
October 1, 2014
He also recently launched Purple Travel, which focuses on exploring the planet through travel experiences.Fashion's Naughtiest Photographer, Olivier Zahm
September 9, 2014
Historical Examples of focuses
It focuses all the impulses towards good and concentrates them.A Lost Cause
Cyril Arthur Edward Ranger Gull
The focuses of most earthquakes are concentrated in the crust and upper mantle.Earthquakes
Kaye M. Shedlock
The only real places of meeting, or focuses of news, are the cafés.Rome in 1860
The peculiarity of these focuses of moral putrefaction is, to reduce all the races of mankind to the same level.The Apostles
Such a day does not often come upon the river, but if it does, the deep channel of the Isisi focuses all the joy of it.Bones
noun plural -cuses or -ci (-saɪ, -kaɪ, -kiː)
verb -cuses, -cusing, -cused, -cusses, -cussing or -cussed
Word Origin for focus
1640s, from Latin focus "hearth, fireplace" (also, figuratively, "home, family"), of unknown origin, used in post-classical times for "fire" itself, taken by Kepler (1604) in a mathematical sense for "point of convergence," perhaps on analogy of the burning point of a lens (the purely optical sense of the word may have existed before Kepler, but it is not recorded). Introduced into English 1650s by Hobbes. Sense transfer to "center of activity or energy" is first recorded 1796.
1775 in the literal sense; 1807 in the figurative sense, from focus (n.). Related: Focused; focusing; less commonly focussed; focussing.