'submersion' originates from Latin, specifically the word 'submersio,' where 'sub-' meant 'under' and 'mergere' meant 'to dip or plunge.'

'submersio' transformed into the Old French word 'submersion,' and eventually became the modern English word 'submersion' through Middle English.

Initially, it meant 'to dip or plunge under water,' but over time it evolved into its current meaning of 'the act of being submerged.'