English
protosilicate
From proto- + silicate.
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 A silicate formed with the lowest proportion of silicic acid, or having only one atom of silicon in the molecule.
Language periods are conventional ranges, not dates for this word.
Etymograph / protosilicate