Therm-

Roots with similar meanings:

• ard- meaning “heat, glow, passion”
• cal- meaning “heat”
• phleg-, phlog- meaning “burn, heat, inflammation”
• tep- meaning “be warm”

Roots with opposite meanings:

• frig- meaning “cold”
• gel- meaning “icy cold”
• psychr- meaning “cold”

Roots that could be confused:

Notes:

Derived English Words

Commonly encountered words are in bold.

Thermal: Relating to heat or temperature.

Thermals: Rising currents of warm air used by birds and gliders.

Thermidor: The 11th month of the French Republican calendar, usually occurring in July and August, named for its association with heat.

Thermistor: An electrical resistor whose resistance varies with temperature.

Thermite: A mixture of metal powder and metal oxide that produces an extremely exothermic reaction when ignited.

Thermocouple: A device that measures temperature by the voltage generated when two different metals are joined and heated.

Thermodynamic: Pertaining to the branch of physics that deals with the relationships between heat and other forms of energy.

Thermodynamics: The study of the effects of temperature and energy transformations.

Thermoduric: Capable of withstanding high temperatures without significant change.

Thermolabile: Easily altered, decomposed, or destroyed by heat.

Thermoluminescence: The emission of light from a substance when it is heated, typically after exposure to radiation.

Thermolysis: The breakdown of molecules by heat.

Thermonuclear: Relating to the fusion of atomic nuclei at high temperatures.

Thermophile: An organism that thrives at relatively high temperatures.

Thermophobia: An abnormal fear of heat or high temperatures.

Thermoplegia: Heatstroke or severe heat-induced paralysis.

Thermoregulation: The process by which an organism regulates its body temperature.

Thermoscope: An early form of thermometer, measuring temperature changes without a scale.

Thermosphere: The upper layer of the Earth’s atmosphere, characterized by high temperatures.

Thermotactic: Relating to movement or orientation in response to temperature changes.

Thermotropic: Exhibiting movement or growth in response to temperature changes.

Thermotype: A type or form adapted to a specific temperature range.

Xerotherm: An organism adapted to dry and hot environments.

Geothermal: Relating to or produced by the internal heat of the Earth.

Hydrothermal: Relating to the action of heated water, especially in geological processes.

Radiothermy: The therapeutic use of radiant heat.

Photothermic: Relating to the effects of light in producing heat.

Chronothermal: Involving both time and temperature in processes.

Chronisotherm: A line on a diagram or chart representing equal temperatures over time.

Exothermic: Relating to a process or reaction that releases heat.

Stenothermal: Able to tolerate only a narrow range of temperatures.

Macrotherm: A plant or organism adapted to living in high temperatures.

Megatherm: A type of plant requiring high temperatures for optimal growth.

Microtherm: An organism that grows best at low temperatures.

Mesotherm: A plant that requires a moderate range of temperatures for growth.

Thermometer: An instrument used to measure temperature.

Bathythermograph: An instrument that records water temperature at various depths.

Barothermograph: An instrument that records pressure and temperature over time.

Katathermometer: A device used to measure the cooling effect of air by evaporation and convection.

Lactothermometer: A thermometer used to measure the temperature of milk.

Thermae: Ancient Roman public baths or hot springs.

Thermalgesia: Pain or discomfort due to exposure to heat.

Thermocautery: The use of heat to cauterize tissue for medical purposes.

Thermocoagulation: The use of heat to coagulate tissue in medical treatments.

Thermohaline: Relating to the combined effects of temperature and salinity, especially in oceanography.

Thermojunction: A junction between two different conductors that generates a voltage due to temperature differences.

Thermonastic: Movement or growth in response to temperature changes.

Thermogenesis: The production of heat, especially within an organism.

Thermophilic: Having an affinity for or thriving in high temperatures.

Thermoregulator: A mechanism or device that regulates temperature.

Other Uses

Links

List of Greek and Latin roots in English – Wikipedia

Words Derived from Roots

Greek Alphabet

Other Roots Used in These Words

Root	Meaning
alg-	pain
bar-	weight, pressure
bath-	deep, depth
chron-	time
dur-	hard
dyna-	power
odyn-	pain
ecto-	outside
endo-	inside, within
exo-	outside
gen-, gon-	birth, beget, race, kind
ge-, geo-	earth
graph-	draw, write
hal-	salt
hydr-	water
hyp-	under
hyper-	above, over
is-, iso-	equal, same
jung-, junct-	join
lab-, laps-	slide, slip
lumin-	light
ly-, lysi-, lyt-	dissolving
macr-	long
meg-, megal-	great, large
mes-	middle
meter-, metr-	measure
micr-	small
phil-, -phile	love, friendship
phob-	fear
phos-, phot-	light
plas-	mould
radi-	beam, spoke
regul-	rule
scop-	look at, examine, view, observe
spher-	ball
sten-	stand
sten-	narrow
tang-, -ting-, tact-, tag-	touch
trop-	turning
typ-	stamp, model
xer-	dry