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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.

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.

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.

n. a thermionic tube having two electrodes; used as a rectifier

n. a semiconductor that consists of a p-n junction

"Otellini compared the Obama administration to a "diode" -- an electronic device that conducts electric current in only one direction."

thermionic valve    tube    thermionic tube    vacuum tube    electron tube    thermionic vacuum tube   

LED   

transistor    capacitor    resistor    photodiode    semiconductor    microwave    detector    amplifier    transformer    inductor