define anode and cathode
A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition is sometimes remembered using the mnemonic CCD for cathode current departs. A conventional current describes the direction in which positive electronic charges move. For example, reversing the current direction in a Daniell galvanic cell would produce an electrolytic cell, where the copper electrode is the positive terminal and the anode. 2  In a diode, the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device.
Medical Definition of ANODE. 1. : the electrode of an electrochemical cell at which oxidation occurs: as a: the positive terminal of an electrolytic cell b: the negative terminal of a storage battery that is delivering current.2. : the electron-collecting electrode of an electron tubeâcompare cathode.ull Definition of ANODE. 1. : the electrode of an electrochemical cell at which oxidation occurs: as a: the positive terminal of an electrolytic cell b: the negative terminal of a galvanic cell. 2.