English
autotrophy
From auto- + -trophy.
Proto-Indo-European *men- ‘to think’
…
Ancient Greek αὐτόματον ‘automaton’
Latin automatum ‘automaton’
New Latin automaticus ‘automatic’
English automatic
English auto
Proto-Indo-European *trep- ‘to turn’
…
Ancient Greek τροπαῖος ‘of defeat’
Ancient Greek τρόπαιον ‘monument of an enemy's defeat’
Latin trophaeum ‘a sign of victory’
Middle French trophée ‘memorial’
English trophy
Today it means
noun The synthesis of food from inorganic substances, using heat or light as a source of energy
Language periods are conventional ranges, not dates for this word.
Etymograph / autotrophy