1arc 
/ˈɑɚk/ noun
plural arcs /ˈɑɚk/ noun [count] 1 : a line or shape that is curved like part of a circle
▪ He bent the twig into an arc. ▪ The ball floated in a high arc. — see picture at geometry 2 technical : a brightly glowing electric current that flows across an open space between two points (such as two electrodes)
▪ an electric arc
▪ He bent the twig into an arc. ▪ The ball floated in a high arc. — see picture at geometry
▪ an electric arc
