Dictionary

A two-dimensional geometric figure, a line, consisting of the set of all those points in a plane that are equally distant from a given point (center).

Example: The set of all points (x, y) such that (x − 1)2 + y2 = r2 is a circle of radius r around the point (1, 0).

A two-dimensional geometric figure, a disk, consisting of the set of all those points of a plane at a distance less than or equal to a fixed distance (radius) from a given point.

Any shape, curve or arrangement of objects that approximates to or resembles the geometric figures.

Example: Children, please join hands and form a circle.

A specific group of persons; especially one who shares a common interest.

Example: circle of friends

To travel around along a curved path.

Example: The wolves circled the herd of deer.

To surround.

Example: A high fence circles the enclosure.

To place or mark a circle around.

Example: Circle the jobs that you are interested in applying for.

To travel in circles.

Example: Vultures circled overhead.