'submarine' originates from Latin, specifically the word 'submarinus,' where 'sub-' meant 'under' and 'marinus' meant 'of the sea.'

'submarinus' transformed into the French word 'submarin,' and eventually became the modern English word 'submarine' through Middle English.

Initially, it meant 'under the sea,' but over time it evolved into its current meaning of 'a vessel that operates underwater.'