Etymograph

English

thermodynamic

Thermodynamic comes from French dynamique ‘in motion, dynamic’, from Ancient Greek δυναμικός ‘able, powerful’, and ultimately from Proto-Indo-European *dewh₂- ‘to fit’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dewh₂-‘to fit’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*dunamaireconstructed
  3. Ancient Greekc. 800–300 BCEδῠ́νᾰμαιdŭ́nămai
  4. Ancient Greek, derivedc. 800–300 BCEδύναμιςdúnamis‘power, might, strength’
  5. Ancient Greek, derivedc. 800–300 BCEδυναμικόςdunamikós‘able, powerful’
  6. Frenchc. 1600–presentdynamique‘in motion, dynamic’
  7. English1500–presentdynamic
  8. Englishearliest quotation 1949thermodynamic

attested reconstructed ? uncertain or disputed deepest recorded ancestor

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*dewh₂-‘to fit’reconstructed
  2. Proto-Hellenicc. 2200–1600 BCE*dunamaireconstructed
  3. Ancient Greekc. 800–300 BCEδῠ́νᾰμαιdŭ́nămai
  4. Ancient Greek, derivedc. 800–300 BCEδύναμιςdúnamis‘power, might, strength’
  5. Ancient Greek, derivedc. 800–300 BCEδυναμικόςdunamikós‘able, powerful’
  6. Frenchc. 1600–presentdynamique‘in motion, dynamic’
  7. English1500–presentdynamic
  8. Englishearliest quotation 1949thermodynamic

Earliest quotation: 1949, and December, Motive Power Developments in France: “The locomotive is designed to give a high and…”

A compound of thermo- + dynamic

Proto-Indo-European *gʷʰer- ‘to be warm’

Proto-Indo-European *gʷʰermos

Proto-Hellenic *kʷʰermós

Ancient Greek θερμός ‘warm, hot’

English thermo-

Proto-Indo-European *dewh₂- ‘to fit’

…

Ancient Greek δῠ́νᾰμαι

Ancient Greek δύναμις ‘power’

Ancient Greek δυναμικός ‘powerful’

French dynamique ‘in motion, dynamic’

English dynamic

Linked words

through Proto-Indo-European *dewh₂- ‘to fit’

down, town, beautiful, beauty, ben, tool, bonus, teen, rebel, beneficial, optimal, boo, tow, bonnie, beau, optimism, boon, dun, beneficiary, revel, bona, bello, bene, bonny, tine, taw, bauble, dynastic, bellicose, bonbon, 91 more

through Proto-Hellenic *dunamai

dynasty, 49 more

through Ancient Greek δύναμις ‘power, might, strength’

dynamite, dynamo, 54 more

through English dynamic

dynamically, dynamical, hydrodynamic, psychodynamic, biodynamic, hemodynamic, 45 more

Today it means

adj Of, or relating to the conversion of heat into other forms of energy.

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *dewh₂- / thermodynamic