Definitions of focus

  1. bring into focus or alignment; to converge or cause to converge; of ideas or emotions
  2. a point of convergence of light ( or other radiation) or a point from which it diverges
  3. put into focus; as of an image on a screen; " Please focus the image; we cannot enjoy the movie"
  4. become focussed or come into focus; " The light focused"
  5. cause to converge on or toward a central point; " Focus the light on this image"
  6. maximum clarity or distinctness of an image rendered by an optical system; " in focus"; " out of focus"
  7. maximum clarity or distinctness of an idea; " the controversy brought clearly into focus an important difference of opinion"
  8. a fixed reference point on the concave side of a conic section
  9. a central point or locus of an infection in an organism; " the focus of infection"
  10. special emphasis attached to something; " the stress was more on accuracy than on speed"
  11. put ( an image) into focus; " Please focus the image; we cannot enjoy the movie"
  12. A point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed; as, the focus of a lens or mirror.
  13. A point so related to a conic section and certain straight line called the directrix that the ratio of the distace between any point of the curve and the focus to the distance of the same point from the directrix is constant.
  14. A central point; a point of concentration.
  15. To bring to a focus; to focalize; as, to focus a camera.
  16. The point where a system of rays of light or heat meet after being reflected or refracted; any central point.
  17. Focused.
  18. Focusing.
  19. ( optics) A point in which the rays of light meet after reflection or refraction, and cause great heat; any central point; - pl. FOCUSES and FOCI.
  20. To bring to a focus; pp. focussed.
  21. Point where rays meet; central point.
  22. To bring to a focus.
  23. To adjust or bring to a focus; concentrate.
  24. A point of meeting of rays of light; any point of concentration.
  25. Geom. One of two points, as in an ellipse, the sum or difference of whose distances to any point of the curve is always the same.
  26. A point in which any number of rays of light meet, after being reflected or refracted; a point in the parabola, ellipse, or hyperbola, where rays reflected from all their parts meet; a central point or point of convergence.
  27. The point in which rays of light or heat meet; any central point.

Usage examples for focus

  1. I was still equally conscious that if I gave way to fear I should be in bodily peril; and I concentrated all my faculties in the single focus of resisting, stubborn will. – The Boy Scouts Book of Stories by Various
  2. " The picture being unfinished, gentlemen," said he, " must, if you would do me justice, be seen from a- a focus; must be judged from here, I mean." – Peg Woffington by Charles Reade
  3. She altered her focus. – Man to Man by Jackson Gregory
  4. At first he could distinguish nothing earthly; then the tents came sharply into focus, and after them the ring of impenetrable trees. – Stingaree by E. W. (Ernest William) Hornung
  5. The dramatist might take advantage of the dramatic value of a given situation like the sacrifice of Isaac, or he might make a series of plays lead up to the great events of the redemption, but he was blind to any opportunity to abstract from the narrative the events that dealt with an emotional crisis and to focus them upon that as the centre of a dramatic structure. – Tragedy by Ashley H. Thorndike
  6. The dancer had throughout been the focus of interest for me. – Jungle Peace by William Beebe
  7. Arangbar sipped from his wineglass and shifted slightly, his eyes again barely in focus. – The Moghul by Thomas Hoover
  8. Each little station was the focus of a world of its own. – Jungle Peace by William Beebe
  9. But it didn't occur to him that it was the director who was in focus, not the man. – The Real Adventure by Henry Kitchell Webster
  10. For a moment his eyes seemed lost in concentration, then they quickly regained their focus. – The Moghul by Thomas Hoover
  11. Everything- background and foreground alike- was sharply in focus. – Anything You Can Do by Gordon Randall Garrett
  12. I declare, mother, said Lenora, I should suppose you might contrive up something to bring matters to a focus. – Homestead on the Hillside by Mary Jane Holmes
  13. Montani had half risen, the better to focus an opera- glass on the box. – Lady Larkspur by Meredith Nicholson
  14. I'm not Jay- but I'm not Jason, either-" I could remember my entire life, but the focus had shifted. – The Planet Savers by Marion Zimmer Bradley
  15. A stranger- When he tried to focus on what was wrong he could find nothing that looked any different, yet the total effect was completely wrong. – The Man Who Staked the Stars by Charles Dye
  16. Then I'll focus the camera on it, and the films and machinery will do the rest. – Tom Swift and his Wizard Camera or, Thrilling Adventures while taking Moving Pictures by Victor Appleton
  17. It'll only take me a few minutes, and I can be down the ramp before they can focus their beams on the airlock. – Rebels of the Red Planet by Charles Louis Fontenay