Word Origin See more synonyms on Thesaurus.com a combining form used in the names of devices that stabilize or make constant what is specified by the initial element: thermostat; rheostat. Origin of -stat
to make stand; see
agent noun suffix
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for -stat indicating a device that causes something to remain stationary or constant thermostat Word Origin
-statēs, from histanai to cause to stand
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for -stat
combining form used in forming the names of devices for stabilizing or regulating (
thermostat, etc.), from Greek statos "standing, stationary," from histanai "to cause to stand," from PIE root *sta- "to stand" (see stet). First used in heliostat "an instrument for causing the sun to appear stationary" (1742).
Online Etymology Dictionary, © 2010 Douglas Harper
-stat Something that stabilizes: barostat. Something that inhibits: hemostat.
The American Heritage® Stedman's Medical Dictionary
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