Intermediate (B1)
IPA: /ˈθɜːr.məl/
KK: /ˈθɜrməl/
Definition
Relating to heat or temperature, often used to describe materials or processes that help keep warmth.
Example
She wore thermal socks to keep her feet warm in the cold weather.
Conversation

Have you tried those new thermal jackets for winter?

No, I haven't! Do they really keep you warm?

Absolutely! They’re designed to trap body heat really well.

Sounds perfect for the cold weather coming up.
Synonyms & Antonyms
Definition
A rising current or body of warm air that is often used in meteorology and aviation.
Example
The thermal lifted the glider higher into the sky.
Conversation

Have you ever seen a thermal updraft in action?

Yeah, it's fascinating how it makes the birds soar higher.

I find it amazing how the thermal currents work in nature.
Root Explanation
Thermal is derived from the Greek word "thermos" (meaning hot or warm). The word refers to anything related to heat.
Memory Tip
Think of 'thermos' which means hot — that's why 'thermal' relates to heat.
Visually Confused Words
thema
terma
herma
hemal
synthermal
isothermal
geothermal
exothermal