# Arc

In

mathematics, an

**arc** is a part of a

circle between two points (also called a

**circle segment**). A

minute of arc is an

angle measure, being 1/60 of a

degree. A

second of arc is 1/60 of a minute of arc.

In graph theory, an **arc** is a synonym for an edge.

**Arc** is also a name for a dialect of the Lisp programming language.

See also: Arc lamp, voltaic arc.