hodo-, hod-, od-
(Greek: way, a going, a traveling; road, path)
"In an electron tube, electrons from the cathode travel across the tube toward the anodal position; in an electroplating cell, negative ions are deposited at the anodal terminal."
2. Etymology: coined from Greek anodos, "way up", from ana, "up" + hodos, "way". Proposed by William Whewell and published by English chemist and physicist Michael Faraday (1791-1867). So called from the path the electrical current was thought to take.
William Whewell, May 24, 1794–March 6, 1866; was an English polymath, scientist, Anglican priest, philosopher, theologian, and historian of science.
2. The point or surface in contact with the negative pole; in electro-metallurgy the object to be electro-plated.
3. A negatively charged electrode, as of an electrolytic cell, a storage battery, or an electron tube.
4. The positively charged terminal of a primary cell or a storage battery that is supplying current.
5. Etymology: from Greek kathodos, "descent" (kat-, kata-, cata-) + hodos, "way, path".
2. Referring to the procedure of an outwardly or efferently application of a nerve impulse from a nerve center: "The cathodic nerve carries impulses from the brain to various parts of the body."
2. An electron tube having a cathode and an anode.
3. A two-terminal semiconductor device used chiefly as a rectifier.
2. A collector or emitter of electric charge or of electric-charge carriers, as in a semiconducting device.
3. A conducting element that performs one or more of the functions of emitting, collecting, or controlling the movements of electrons or ions in an electron tube, or the movements of electrons or holes in a semiconductor device.
4. A medium for conducting an electrical current from the body to physiological monitoring equipment.
5. A terminal or surface at which electricity passes from one material or medium to another, as at the electrodes of a battery or electrolytic capacitor.
6. One of the terminals of metal, salts, or electrolytes through which electricity is applied to, or taken from, the body or an electric device or instrument.
7. An electronically conductive structure that provides for an electrochemical reaction through the change of oxidation state of a substance.
It may contain or support the reactant or act as the site for the reaction. The anode and cathode of an electric cell are electrodes.
2. One of a series of related events in the course of a continuous account.
3. A portion of a narrative that relates an event or a series of connected events and forms a coherent story in itself; an incident; such as, an episode in a autobiography.
4. A separate part of a serialized work; such as, a novel or play.
5. A separate program that is part of a television or radio series.
6. A section of a classic Greek tragedy that occurs between two choric songs.
7. In music, a passage between statements of a main subject or theme, as in a rondo or fugue.
2. Divided into or composed of closely connected but independent sections.
3. Sporadic or happening at irregular intervals: "She kept having episodic pain in her lower back."
4. Of a limited duration: "There were episodic wind squalls during the storm."
2. The study of pathways: in brain physiology, it is the study of the interconnections of brain cells; in philosophy, it is the study of interconnected ideas; in geography, it is the study of paths.
2. An excessive compulsion to be traveling.