arc

1. is a type of: electrical conduction - the passage of electricity through a conductor
   subtypes:

   • brush discharge - discharge between electrodes creating visible streamers of ionized particles
   • corona, corona discharge, corposant, electric glow, saint elmo's fire, saint elmo's light, saint ulmo's fire, saint ulmo's light, st. elmo's fire - an electrical discharge accompanied by ionization of surrounding atmosphere
   • flashover - an unintended electric discharge (as over or around an insulator)
   same as: discharge, electric arc, electric discharge, spark
2. is a type of: curve, curved shape - the trace of a point whose direction of motion changes
   subtypes: limb - the graduated arc that is attached to an instrument for measuring angles
   is a part of:

   • circle - ellipse in which the two axes are of equal length; a plane curve generated by one point moving at a constant distance from a fixed point
   • sector - a plane figure bounded by two radii and the included arc of a circle
3. is a type of: curve, curved shape - the trace of a point whose direction of motion changes
   subtypes: rainbow - an arc of colored light in the sky caused by refraction of the sun's rays by rain
   same as: bow

1. is a type of: bend, flex - form a curve
   subtypes: camber - curve upward in the middle
   same as: arch, curve

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