from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An electronic device that restricts current flow chiefly to one direction.
- n. An electron tube having a cathode and an anode.
- n. A two-terminal semiconductor device used chiefly as a rectifier.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An electronic device that allows current to flow in one direction only; a valve.
- n. A two-terminal semiconductor device, having a p-n junction, used chiefly as a rectifier.
from The Century Dictionary and Cyclopedia
- Of two ways; in elect. teleg., same as duplex.
- n. In botany, the rudimentary or transition body in vascular plants which develops into the prothallium.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a thermionic tube having two electrodes; used as a rectifier
- n. a semiconductor that consists of a p-n junction
Learned formation, coined by William Eccles in 1919, after Greek δίοδος. (Wiktionary)