English
optode
From opto- + -ode.
Formed from opto + ode
Proto-Hellenic *awéidō ‘to sing’
Ancient Greek ᾰ̓είδω ‘to sing’
Ancient Greek ᾠδή ‘song’
Late Latin ōda
Middle French ode
English ode
Today it means
noun An optical sensor device that optically measures a specific substance.
Language periods are conventional ranges, not dates for this word.
Etymograph / optode