wire-wound rheostat

wire-wound rheostat

[′wīr ¦wau̇nd ′rē·ə‚stat]
(electricity)
A rheostat in which a sliding or rolling contact moves over resistance wire that has been wound on an insulating core.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.