English
photodynamic
Photodynamic comes from French dynamique ‘in motion, dynamic’, from Ancient Greek δυναμικός ‘able, powerful’, and ultimately from Proto-Indo-European *dewh₂- ‘to fit’.
- Proto-Indo-Europeanc. 4500–2500 BCE*dewh₂-1‘to fit’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*dunamai1reconstructed
- Ancient Greekc. 800–300 BCEδῠ́νᾰμαι1dŭ́nămai
- Ancient Greekc. 800–300 BCEδύναμις1dúnamis‘power, might, strength’
- Ancient Greekc. 800–300 BCEδυναμικός1dunamikós‘able, powerful’
- Frenchc. 1600–presentdynamique1‘in motion, dynamic’
- English1500–presentdynamic1
- Englishtodayphotodynamic1
attested reconstructed ? uncertain or disputed deepest recorded ancestor
- 1 Wiktionary, English photodynamic
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*dewh₂-Wiktionary, English photodynamic‘to fit’reconstructed
- Proto-Hellenicc. 2200–1600 BCE*dunamaiWiktionary, English photodynamicreconstructed
- Ancient Greekc. 800–300 BCEδῠ́νᾰμαιWiktionary, English photodynamicdŭ́nămai
- Ancient Greekc. 800–300 BCEδύναμιςWiktionary, English photodynamicdúnamis‘power, might, strength’
- Ancient Greekc. 800–300 BCEδυναμικόςWiktionary, English photodynamicdunamikós‘able, powerful’
- Frenchc. 1600–presentdynamiqueWiktionary, English photodynamic‘in motion, dynamic’
- English1500–presentdynamicWiktionary, English photodynamic
- EnglishtodayphotodynamicWiktionary, English photodynamic
A compound of photo- + dynamic
Proto-Indo-European *bʰeh₂- ‘to shine, glow light’
Proto-Indo-European *bʰéh₂os
Proto-Hellenic *pʰáwos
Ancient Greek φᾰ́ος ‘light’
Ancient Greek φῶς ‘light’
English photo-
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, beautiful, town, beauty, ben, bonus, tool, teen, rebel, beneficial, optimal, boo, bonnie, beau, tow, optimism, boon, dun, beneficiary, revel, bona, bello, bene, bonny, tine, taw, bauble, dynastic, bellicose, bonbon, 90 more
through Proto-Hellenic *dunamai
through Ancient Greek δύναμις ‘power, might, strength’
through English dynamic
dynamically, thermodynamic, dynamical, hydrodynamic, hemodynamic, psychodynamic, biodynamic, 44 more
Today it means
adj Of, relating to, or caused by the energy or momentum of light or other electromagnetic radiations.
Sources
Sources: Wiktionary, “photodynamic”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / Proto-Indo-European *dewh₂- / photodynamic