'audiometric' originates from Latin and Greek via a modern English formation, specifically from the Latin word 'audīre' where 'aud-' meant 'to hear' and the Greek word 'metron' where 'metron' meant 'measure' (combined in 'audiometry') plus the English adjectival suffix '-ic'.

'audiometric' changed from the noun 'audiometry' (formed in the 19th century from 'audio-' + '-metry') and eventually became the modern English adjective 'audiometric' to describe things pertaining to those measurements.

Initially it meant 'relating to the measurement of hearing' and over time it has retained this specialist meaning in modern usage.