Meaning of cryotron

cry•o•tron

Pronunciation: (krī'u-tron"), [key]
— n. Electronics, Computers.
  1. a cryogenic device that uses the principle that a varying magnetic field can cause the resistance of a superconducting element to change rapidly between its high normal and low superconductive values: used as a switch and as a computer-memory element.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.