focus

• direct one´s attention on something
• the concentration of attention or energy on something
• bring into focus or alignment
• a point of convergence of light (or other radiation) or a point from which it diverges
• a central point or locus of an infection in an organism
• become focussed or come into focus
• put (an image) into focus
• To bring to a focus
• maximum clarity or distinctness of an image rendered by an optical system
• maximum clarity or distinctness of an idea
• special emphasis attached to something
• a fixed reference point on the concave side of a conic section
• cause to converge on or toward a central point
• A point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed
• 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
• A central point

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