diode

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Related to Crystal diode: zener diode

diode

[dī′od]
1 an electron tube or x-ray tube having a cathode and an anode.
2 an electrical device that has a higher conductance for current flowing in one direction than for current flowing in the opposite direction.

di·ode

(dī'ōd)
A bipolar device that permits a flow of electrons in only one direction.
Synonym(s): silicone diode.
[di- + -ode fr. anode, cathode]

diode

a piece of equipment with two terminals which carries electrical current in one direction only.