rheostat

[ ree-uh-stat ]
/ ˈri əˌstæt /

noun Electricity.

an adjustable resistor so constructed that its resistance may be changed without opening the circuit in which it is connected, thereby controlling the current in the circuit.

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Origin of rheostat

First recorded in 1843; rheo- + -stat

OTHER WORDS FROM rheostat

rhe·o·stat·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for rheostat

British Dictionary definitions for rheostat

rheostat
/ (ˈriːəˌstæt) /

noun

a variable resistance, usually consisting of a coil of wire with a terminal at one end and a sliding contact that moves along the coil to tap off the current

Derived forms of rheostat

rheostatic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for rheostat

rheostat
[ rēə-stăt′ ]

See under resistor.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.