point-contact diode

point-contact diode

[′pȯint ¦kän‚takt ‚dī‚ōd]
(electronics)
A semiconductor rectifier that uses the barrier formed between a specially prepared semiconductor surface and a metal point to produce the rectifying action.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.