Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An electronic device that restricts current flow chiefly to one direction.
 - noun An electron tube with a cathode and anode.
 - noun A two-terminal semiconductor device used chiefly as a rectifier.
 
from The Century Dictionary.
- noun In botany, the rudimentary or transition body in vascular plants which develops into the prothallium.
 -     Of two ways; in elect. teleg., same as 
duplex . 
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun   An 
electronic device thatallows current toflow in onedirection only; avalve . - noun   A two-terminal 
semiconductor device, having ap-n junction , used chiefly as arectifier . 
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a thermionic tube having two electrodes; used as a rectifier
 - noun a semiconductor that consists of a p-n junction
 
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The evil geniuses* at Wicked Lasers have weaponized a laser for the consumer market by simply (?) rejiggering an unreasonably-powerful blue laser diode from a home theater projector and placing it in a lightsaber casing.
No Way This Can Go Wrong: An Affordable, Real-Life Lightsaber 2010
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Otellini compared the Obama administration to a "diode" -- an electronic device that conducts electric current in only one direction.
Record Article Feed 2010
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The author of the above hypothesis wrote his degree paper on silicon carbide light-emitting diode, that is why the ending of the forth series is the most simple- it is a modern light-emitting diode.
Posthuman Blues Mac 2007
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It looks like something out of "Star Wars," but it's not sci-fi, it's high tech and it's called a diode laser.
RNews - TOP STORIES 2009
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It looks like something out of "Star Wars," but it's not sci-fi, it's high tech and it's called a diode laser.
RNews - TOP STORIES 2009
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A diode is a junction of two types of semiconductor, which only allow electrons to flow in one direction.
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It looks like something out of "Star Wars," but it's not sci-fi, it's high tech and it's called a diode laser.
RNews - TOP STORIES 2009
 - 
								
It looks like something out of "Star Wars," but it's not sci-fi, it's high tech and it's called a diode laser.
RNews - TOP STORIES 2009
 - 
								
It looks like something out of "Star Wars," but it's not sci-fi, it's high tech and it's called a diode laser.
RNews - TOP STORIES 2009
 - 
								
It looks like something out of "Star Wars," but it's not sci-fi, it's high tech and it's called a diode laser.
RNews - TOP STORIES 2009
 
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