Pronunciation: (thûr'mu-stat"), [key]
—n., v., -stat•ted or -stat•ed; -stat•ting or -stat•ing.
a device, including a relay actuated by thermal conduction or convection, that functions to establish and maintain a desired temperature automatically or signals a change in temperature for manual adjustment.
to equip or control with a thermostat.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.