impedance irregularity

impedance irregularity

[im′pēd·əns i‚reg·yə′lar·əd·ē]
(electricity)
A discontinuity or abrupt change which results from a junction between unlike sections of a transmission line or an irregularity on a line.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.