'multimineralic' originates from a combination of the prefix 'multi-' (from Latin 'multus' meaning 'many'), the root 'mineral' (from Medieval Latin 'minerale' meaning 'a substance of a mine or relating to mines'), and the adjectival suffix '-ic' (from Greek/Latin '-ikos'/'-icus' forming adjectives).

'multimineralic' was formed in modern English by attaching the suffix '-ic' to 'multimineral' (itself built from 'multi-' + 'mineral'), producing an adjective meaning 'having many minerals'.

Initially, the components meant 'many' and 'mineral' separately, and when combined the term has come to mean 'containing or composed of many minerals'; this core sense has remained stable in technical usage.