therm

heat

Spelled therm · thermos 'hot'

Greek thermos, hot: a thermometer measures heat, a thermostat keeps temperature steady, and geothermal heat comes from Earth.

Words built from it

thermos — a container that keeps liquids hot or cold
therm (heat) + -os (adjective ending, 'hot')
thermal — relating to heat
therm (heat) + -al (relating to)
thermometer — an instrument that measures temperature
therm (heat) + meter (measure)
thermostat — a device that regulates temperature
therm (heat) + stat (stand, stay steady)
geothermal — relating to heat from within the earth
geo (earth) + therm (heat) + -al (relating to)
exothermic — releasing heat during a reaction
exo- (outside, out) + therm (heat) + -ic (relating to)