thermal

/ˈθɜrməl/
adjective
  1. Relating to heat or temperature.
    • Wearing thermal underwear helps keep you warm in cold weather.
    • Thermal energy from the sun can be used to heat water in solar panels.
    • The thermal conductivity of metal makes it a good material for cooking pots.
  2. Designed to prevent heat from escaping or entering; insulating.
    • We installed thermal curtains to keep the house warm in winter.
    • Double-glazed windows provide excellent thermal insulation.
    • The thermal lining in this jacket traps body heat effectively.
Antonyms
noun
  1. A rising current of warm air, used by birds and gliders to gain altitude.
    • Paragliders rely on thermals to stay aloft for long flights.
    • The glider pilot found a strong thermal and climbed rapidly.
    • Hawks circle in thermals to soar high without flapping their wings.
  2. A type of fabric or clothing designed to retain body heat.
    • He wore a thermal under his shirt to stay warm during the hike.
    • She packed a set of thermals for the ski trip.
    • Thermals are great for layering in cold climates.
What does "thermal" mean? | whatsthatwordmean | whatsthatwordmean