thermal

Concerning temperature retention

Thermal relates to heat, whether describing its presence, production, or retention.

A thermal blanket keeps you warm; thermal energy is heat energy; thermal imaging detects heat signatures.

As a noun, a thermal is a rising column of warm air that gliders and birds ride to gain altitude without expending energy.

In casual use, thermals refers to insulated undergarments worn in cold weather: I wore my thermals under my jeans for the ski trip.

heat

temperature

Measured heat intensity

calorimetry · enthalpy · equilibrium · transfer · capacity · expansion · conductivity · insulator · gradient · flux

updraft

soaring

Rising effortlessly upward

column · lift · birds · hawks · eagles · vultures · convection · circulation · altitude · flight

insulation

underwear

Clothing worn beneath

wool · polyester · fabric · leggings · socks · gloves · jacket · parka · base layer · moisture-wicking

imaging

infrared

Heat-bearing electromagnetic waves

night vision · scanner · sensor · surveillance · medical · building inspection · wildlife · body heat · radiation · diagnostic

spring

hot spring

Naturally heated groundwater basin

  • geyserErupting thermal vent
  • spaTherapeutic wellness facility
  • mineralNaturally formed crystalline solid

bathing · volcanic · sulfur · steam · pool · natural · Yellowstone · Iceland · onsen · soaking

Categories
Opposites
temperature quality

thermalcold

Low temperature state

freezing · frigid · chilling · icy · cool

heat-related vs. non-heat-related

thermalnonthermal

Not involving heat

mechanical · electrical · chemical · isothermal · nuclear

insulation function

thermalcooling

Losing thermal energy

breathable · ventilated · lightweight · moisture-wicking · uninsulated

Phrases
Family

thermos, thermostat, thermometer, thermal desorption, thermals, hypothermia, geothermal, thermonuclear, therm

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G