Is “Arc” a Scrabble word?

1. 1.That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.

2. 2.A continuous part of the circumference of a circle (circular arc) or of another curve.

3. 3.A curve, in general.

Synonyms: circle segment, circular arc, curve, swoop, arrow, directed edge

1. 1.To move following a curved path.

2. 2.To shape into an arc; to hold in the form of an arc.

3. 3.To form an electrical arc.