'seaborne' originates from English, specifically a compound of 'sea' + 'borne', where 'sea' meant 'sea' and 'borne' is the past participle of 'bear' meaning 'carried'.

'seaborne' developed as the compound 'sea-borne' in Modern English; 'borne' comes from Old English 'boren' (past participle of 'beran') and Middle English 'borne', combining with Old English 'sǣ' ('sea') to form the compound.

Initially it meant 'carried by the sea' and over time has retained this core meaning, used for goods, people, organisms, or influences that are transported or originate via the sea.