verb

definition

Adapt to the prevailing level of light and become able to see clearly.

example

try to focus on a stationary object

definition

Place the focus on (an element of a sentence).

noun

definition

One of the fixed points from which the distances to any point of a given curve, such as an ellipse or parabola, are connected by a linear relation.

example

The circumcircle of a triangle formed by three tangents to a parabola, passes through the focus of the parabola.

definition

An element of a sentence that is given prominence by intonational or other means.

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