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Foci

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( Xem từ này trên từ điển Anh Việt)

Mục lục

Noun

a pl. of focus.

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.

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