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thermal
When used as an adjective, "thermal" is common in technical contexts like science, construction, and clothing (e.g., "thermal underwear"). As a noun referring to warm clothing, it is most often used in the plural form ("thermals") to refer to a set of undergarments. In aviation or bird-watching, "a thermal" refers specifically to the rising air current and is always a countable noun.
💬Trò chuyện
The HVAC is totally shot. Did you bring your thermals?
Nah, I'm just gonna tough it out.
Ý nghĩa
Relating to heat or the temperature of a system.
"The house was built with thermal insulation to keep it warm during winter."
A column of rising air in the atmosphere, often used by gliding birds or aircraft to gain altitude.
"The eagle circled upward, riding a strong thermal over the valley."