English
protiodide
From proto- + iodide.
Proto-Indo-European *pér ‘through’
Proto-Indo-European *pró ‘forwards, before’
Proto-Hellenic *pró
Ancient Greek πρό ‘before’
Ancient Greek πρῶτος ‘first’
English proto-
Today it means
noun An iodide containing a lower proportion of iodine than any other iodide of the same substance or series.
Language periods are conventional ranges, not dates for this word.
Etymograph / protiodide