Focus - (n.) 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.
Focus - (n.) 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.
Focus - (n.) A central point; a point of concentration.
Focus - (v. t.) To bring to a focus; to focalize; as, to focus a camera.
Focuses - (pl. ) of Focus
Focused - (imp. & p. p.) of Focus
Focusing - (p. pr. & vb. n.) of Focus
Focus - —n. (pl. Focuses or foci) 1 a point at which rays or waves meet after reflection or refraction. B point from which rays etc. Appear to proceed. 2 a point at which an object must be situated for a lens or mirror to give a well-defined image. B adjustment of the eye or a lens to give a clear image. C state of clear definition (out of focus). 3 = *focal point 2. —v. (-s- or -ss-) 1 bring into focus. 2 adjust the focus of (a lens or eye). 3 concentrate or be concentrated on. 4 converge or make converge to a focus. [latin, = hearth]
Refocus - v. (-s- or -ss-) focus again or anew.
Since 2018-05-23 14:19:32