Skip to Content


Pronunciation: ark


  1. A curved line or segment of a circle.
  2. Continuous luminous passage of an electric current in a gas or vacuum between two or more separated electrodes.

See: arch, arcus, arcade

[L. arcus, a bow]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.