thermodynamics

noun

ther·​mo·​dy·​nam·​ics ˌthər-mō-dī-ˈna-miks How to pronounce thermodynamics (audio)
-də-
plural in form but singular or plural in construction
1
: physics that deals with the mechanical action or relations of heat
2
: thermodynamic processes and phenomena
thermodynamicist noun

Word History

First Known Use

1854, in the meaning defined at sense 1

Time Traveler
The first known use of thermodynamics was in 1854

Cite this Entry

“Thermodynamics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thermodynamics. Accessed 11 Sep. 2025.

Medical Definition

thermodynamics

noun, plural in form but singular or plural in construction
ther·​mo·​dy·​nam·​ics -iks How to pronounce thermodynamics (audio)
1
: physics that deals with the mechanical action or relations of heat
2
: thermodynamic processes and phenomena

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