photosynthesis (English)
Where does "photosynthesis" come from?
The English noun 'photosynthesis' is formed from 'photo-', a clipping of 'photograph', combined with 'synthesis'[1][3]. The latter traces through Latin 'synthesis' to Ancient Greek 'σύνθεσις', meaning 'a putting together' or 'composition', which derives from the verb 'συντίθημι', meaning 'put together' or 'combine'[2][4]. This Greek verb combines the prefix 'συν-' ('together') with 'τίθημι' ('set, place')[2], a root descending from Proto-Indo-European 'dʰé-dʰeh₁-ti', meaning 'to put' or 'place'[7][8].
Open questions
- The Proto-Indo-European reconstructed form and its meanings involve several derived morphological stages. [7] [8]
Full etymology tree
- photosynthesis (English), 'Any process by which plants and other photoautotrophs convert light energy into chemical energy.'
- compound photo- (English), 'light, electromagnetic radiation'
- clipping photograph (English), 'A picture created by projecting an image onto a photosensitive surface such as a chemically treated plate or film, CCD receptor, etc.'
- compound synthesis (English), 'The formation of something complex or coherent by combining simpler things.'
- inherited synthesis (Latin), 'A collection or reunion of many objects of analogous nature.'
- inherited σύνθεσις (súnthesis) (Ancient Greek), 'a putting together, composition, combination, juxtaposition, synthesis'
- compound συντίθημι (suntíthemi) (Ancient Greek), 'to assemble, put together'
- compound συν- (sun-) (Ancient Greek), 'with, together, co-, syn-'
- compound τίθημι (títhēmi) (Ancient Greek), 'to put, place, set'
- inherited *t(e/i)tʰēmi (Proto-Hellenic)
- inherited *dʰé-dʰeh₁-ti (Proto-Indo-European)
- derived *dʰeh₁- (Proto-Indo-European), 'to do'
- inherited *dʰé-dʰeh₁-ti (Proto-Indo-European)
- inherited *t(e/i)tʰēmi (Proto-Hellenic)
- suffix -σις (-sis) (Ancient Greek), 'Added to verb stems to form abstract nouns or nouns of action, process, or result'
- compound συντίθημι (suntíthemi) (Ancient Greek), 'to assemble, put together'
- inherited σύνθεσις (súnthesis) (Ancient Greek), 'a putting together, composition, combination, juxtaposition, synthesis'
- inherited synthesis (Latin), 'A collection or reunion of many objects of analogous nature.'
- compound photo- (English), 'light, electromagnetic radiation'
Ancestors
- photo (English)
- synthesis (English)
Descendants and derived words
- anoxygenic photosynthesis (English)
- photosynthate (English)
- photosynthetron (English)
Sources
- photosynthesis (English) - Wiktionary
- synthesis (English) - Wiktionary
- photo (English) - Wiktionary
- synthesis (Latin) - Wiktionary
- σύνθεσις (súnthesis) (Ancient Greek) - Wiktionary
- συντίθημι (suntíthemi) (Ancient Greek) - Wiktionary
- τίθημι (títhēmi) (Ancient Greek) - Wiktionary
- dʰédʰeh₁ti (Proto-Indo-European) - Wiktionary
Updated September 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris