English
allochemical
From allo- + chemical.
Proto-Indo-European *h₂el- ‘beyond, other’
Proto-Indo-European *h₂élyos ‘other, another’
Proto-Hellenic *áľľos
Ancient Greek ἄλλος ‘other’
English allo-
Today it means
adj Of rocks: having multiple types of grain, typically fossiliferous material, ooids, peloids or intraclast in a carbonate matrix.
Language periods are conventional ranges, not dates for this word.
Etymograph / allochemical