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Meaning of FOCUS

Pronunciation:  'fowkus

WordNet Dictionary
  1. [n]  maximum clarity or distinctness of an image rendered by an optical system; "in focus"; "out of focus"
  2. [n]  maximum clarity or distinctness of an idea; "the controversy brought clearly into focus an important difference of opinion"
  3. [n]  the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life"
  4. [n]  a fixed reference point on the concave side of a conic section
  5. [n]  a point of convergence of light (or other radiation) or a point from which it diverges
  6. [n]  a central point or locus of an infection in an organism; "the focus of infection"
  7. [n]  special emphasis attached to something; "the stress was more on accuracy than on speed"
  8. [v]  put into focus; as of an image on a screen; "Please focus the image; we cannot enjoy the movie"
  9. [v]  become focussed or come into focus; "The light focused"
  10. [v]  focus one's attention on something; "Please focus on your studies and not on your hobbies"
  11. [v]  bring into focus or alignment; to converge or cause to converge; of ideas or emotions
  12. [v]  cause to converge on or toward a central point; "Focus the light on this image"

FOCUS is a 5 letter word that starts with F.


 Synonyms: center, centering, centre, concenter, concentrate, concentre, direction, focal point, focalise, focalise, focalize, focalize, focusing, focussing, nidus, pore, rivet, sharpen, stress
 Antonyms: blear, blur, blur, dim, slur
 See Also: absorb, absorption, accent, adapt, adjust, adjust, align, aline, center, center on, cerebrate, clarity, clearness, cogitate, concentrate on, concentration, conform, distinctness, emphasis, engross, engrossment, engulf, focal infection, focus, focus on, hear, immerse, immersion, limpidity, line up, listen, lucidity, narrow down, particularism, pellucidity, pin down, plunge, point, point, point, recall, refocus, refocus, refocus, revolve about, revolve around, set, sharpen, sharpness, soak up, steep, take heed, think, zoom in



Webster's 1913 Dictionary
  1. \Fo"cus\, n.; pl. E. {Focuses}, L. {Foci}. [L. focus
    hearth, fireplace; perh. akin to E. bake. Cf. {Curfew},
    {Fuel}, {Fusil} the firearm.]
    1. (Opt.) 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.
    2. (Geom.) 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
    Note: Thus, in the ellipse FGHKLM, A is the focus and CD the
          directrix, when the ratios FA:FE, GA:GD, MA:MC, etc.,
          are all equal. So in the hyperbola, A is the focus and
          CD the directrix when the ratio HA:HK is constant for
          all points of the curve; and in the parabola, A is the
          focus and CD the directrix when the ratio BA:BC is
          constant. In the ellipse this ratio is less than unity,
          in the parabola equal to unity, and in the hyperbola
          greater than unity. The ellipse and hyperbola have each
          two foci, and two corresponding directrixes, and the
          parabola has one focus and one directrix. In the
          ellipse the sum of the two lines from any point of the
          curve to the two foci is constant; that is:
          AG+GB=AH+HB; and in the hyperbola the difference of the
          corresponding lines is constant. The diameter which
          passes through the foci of the ellipse is the major
          axis. The diameter which being produced passes through
          the foci of the hyperbola is the transverse axis. The
          middle point of the major or the transverse axis is the
          center of the curve. Certain other curves, as the
          lemniscate and the Cartesian ovals, have points called
          foci, possessing properties similar to those of the
          foci of conic sections. In an ellipse, rays of light
          coming from one focus, and reflected from the curve,
          proceed in lines directed toward the other; in an
          hyperbola, in lines directed from the other; in a
          parabola, rays from the focus, after reflection at the
          curve, proceed in lines parallel to the axis. Thus rays
          from A in the ellipse are reflected to B; rays from A
          in the hyperbola are reflected toward L and M away from
    3. A central point; a point of concentration.
    {Aplanatic focus}. (Opt.) See under {Aplanatic}.
    {Conjugate focus} (Opt.), the focus for rays which have a
       sensible divergence, as from a near object; -- so called
       because the positions of the object and its image are
    {Focus tube} (Phys.), a vacuum tube for R[oe]ntgen rays in
       which the cathode rays are focused upon the anticathode,
       for intensifying the effect.
    {Principal, or Solar}, {focus} (Opt.), the focus for parallel
  2. \Fo"cus\, v. t. [imp. & p. p. {Focused}; p. pr. & vb. n.
    To bring to a focus; to focalize; as, to focus a camera. --R.
Computing Dictionary

A hierarchical database language from information builders, inc.

 Definition: a chronologically limited cultural unit within a local culture sequence, characterized by sufficient diagnostic traits to set it apart from all other units. A phase is generally represented by 2 or more components in several sites and is the basic classificatory unit of archaeological "cultures".
Thesaurus Terms
 Related Terms: adductor, approach, asymptote, attractant, attrahent, axiom, blurred, blurry, bottleneck, bring into focus, center, center of attraction, center of consciousness, center of interest, clear, collision course, concenter, concentralization, concentralize, concentrate, concentration, concourse, concurrence, confluence, conflux, congress, converge, convergence, converging, core, crossing, cynosure, distinct, elixir, essence, essential, fix, fixate, flower, focal point, focalization, focalize, focus of attention, fundamental, funnel, fuzzy, gist, gravamen, heart, hub, hypostasis, in focus, indistinct, inner essence, kernel, lodestar, lure, magnet, marrow, meat, meet, meeting, mutual approach, narrowing gap, nave, nerve, nub, nucleus, nuts and bolts, out of focus, pinpoint, pith, point of convergence, polestar, postulate, prime focus, principle, put, quid, quiddity, quintessence, radius, rivet, sap, soul, spirit, spokes, spotlight, stuff, substance, tangent, target, the nitty-gritty, unclear, woolly, zero in