单词 | foci |
释义 | focus1 of 2noun fo·cus ˈfō-kəs plural foci ˈfō-ˌsī also -ˌkī also focuses 1 a : a center of activity, attraction, or attention the focus of the meeting was drug abuse put immigration into focus as a hot topic for commentators b : a point of concentration 2 : directed attention : emphasis The focus is on helping the homeless. 3 a : direction sense 6c the team lost focus b : a state or condition permitting clear perception or understanding tried to bring the issues into focus c : adjustment for distinct vision also : the area that may be seen distinctly or resolved into a clear image d : focal length 4 a : a point at which rays (as of light, heat, or sound) converge or from which they diverge or appear to diverge specifically : the point where the geometrical lines or their prolongations conforming to the rays diverging from or converging toward another point intersect and give rise to an image after reflection by a mirror or refraction by a lens or optical system b : a point of convergence (see convergence sense 1) of a beam of particles (such as electrons) 5 : one of the fixed points that with the corresponding directrix defines a conic section 6 : a localized area of disease or the chief site of a generalized disease or infection 7 : the place of origin of an earthquake or moonquake focusless ˈfō-kəs-ləs adjective focus 2 of 2verb focused also focussed; focusing also focussing transitive verb 1 : to cause to be concentrated focused their attention on the most urgent problems 2 a : to adjust the focus of (the eye, a lens, etc.) focus the telescope b : to bring into focus The results of that research were focused for classroom presentation. 3 : to bring (something, such as light rays) to a focus : concentrate intransitive verb 1 : to concentrate attention or effort focus on the most pressing needs 2 : to adjust one's eye or a camera to a particular range Newborn babies cannot focus for several months. 3 : to come to a focus : converge focusable ˈfō-kə-sə-bəl adjective focuser noun foci noun variants also focuses 1 as in centers a thing or place that is of greatest importance to an activity or interest in the 19th century Paris was the focus of the art world Synonyms & Similar Words Relevance
2 as in directions a guiding or motivating purpose or principle a wildlife conservation organization that seems to have lost its focus Synonyms & Similar Words
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