Focus

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Mục lục 1 Noun 1.1 a central point, as of attraction, attention, or activity 1.2 Physics . a point at which rays of light, heat, or other radiation, meet after being refracted or reflected. 1.3 Optics . 1.4 Geometry . (of a conic section) a point having the property that the distances from any point on a curve to it and to a fixed line have a constant ratio for all points on the curve. 1.5 Geology . the point of origin of an earthquake. 1.6 Pathology . the primary center from which a disease develops or in which it localizes. 2 Verb (used with object) 2.1 to bring to a focus or into focus 2.2 to concentrate 3 Verb (used without object) 3.1 to become focused. 4 Antonyms 4.1 verb 5 Synonyms 5.1 noun 5.2 verb

Noun

a central point, as of attraction, attention, or activity

The need to prevent a nuclear war became the focus of all diplomatic efforts.

Physics . a point at which rays of light, heat, or other radiation, meet after being refracted or reflected.

Optics .

the focal point of a lens.

the focal length of a lens.

the clear and sharply defined condition of an image.

the position of a viewed object or the adjustment of an optical device necessary to produce a clear image

in focus; out of focus.

Geometry . (of a conic section) a point having the property that the distances from any point on a curve to it and to a fixed line have a constant ratio for all points on the curve.

Geology . the point of origin of an earthquake.

Pathology . the primary center from which a disease develops or in which it localizes.

Verb (used with object)

to bring to a focus or into focus

to focus the lens of a camera.

to concentrate

to focus one's thoughts.

Verb (used without object)

to become focused.

Antonyms

verb

ignore , neglect

Synonyms

noun

bull’s eye , center , core , cynosure , focal point , headquarters * , heart , hub , limelight * , locus , meeting place , nerve center * , point of convergence , polestar , seat , spotlight , target , headquarters , bottom , quick , root

verb

adjust , attract , bring out , center , centralize , concenter , concentrate , convene , converge , direct , fasten , fix , fixate , get detail , home in , home in on , hone in , join , key on , knuckle down * , meet , move in , pinpoint , pour it on , put , rivet , sharpen , spotlight * , sweat * , zero in * , zoom in , channel , focalize , address , bend , buckle down , dedicate , devote , give , turn , core , fireplace , hearth , point , spotlight , train