'argentimetric' originates from Latin and Ancient Greek, specifically the Latin word 'argentum', where 'argent-' meant 'silver', and the Greek word 'metron', where 'metr-' meant 'measure'.

'argentimetric' developed from the noun 'argentimetry' (from French 'argentimétrie' and New Latin formations) and the adjectival formation using Greek-derived '-metric', eventually becoming the modern English adjective 'argentimetric'.

Initially it referred generally to measurements involving silver, but over time it has come to mean specifically 'pertaining to argentimetry', i.e., analytical methods (especially titration with silver nitrate) for determining halides or related species.