- any unbroken part of the circumference of a circle or other curved line.
- a luminous bridge formed in a gap between two electrodes.
- the part of a circle representing the apparent course of a heavenly body.
- anything bow-shaped.
- to form an electric arc.
- to move in a curve suggestive of an arc.
- American Red Cross.
- something curved in shape
- part of an unbroken curved line
- a luminous discharge that occurs when an electric current flows between two electrodes or any other two surfaces separated by a small gap and a high potential difference
- a circular section of the apparent path of a celestial body
- a section of a curve, graph, or geometric figure
- to form an arc
- specifying an inverse trigonometric function: usually written arcsin, arctan, arcsec, etc, or sometimes sin –1, tan –1, sec –1, etc
- AIDS-related complex: an early condition in which a person infected with the AIDS virus may suffer from such mild symptoms as loss of weight, fever, etc
