thermodynamics
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The branch of physics concerned with heat, energy and how they transform from one form to another.
Usage notes
The second law of thermodynamics states that, left alone, disorder in a closed system only ever increases.
Test yourself
Which word fits the gap? "The laws of _____ explain why a perpetual motion machine can never actually work."
Answer: thermodynamics
In your own words, what does "thermodynamics" mean?
The branch of physics concerned with heat, energy and how they transform from one form to another.
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