- foilborne⇄adj. 1. supported by hydrofoils.
Ex. a foilborne craft.
2. involving the use of hydrofoils.
Ex. foilborne speeds. - foilborne⇄adv. on hydrofoils.
Ex. It is designed to be operated foilborne in waves up to 15 feet (London Times). - foilborne⇄foilborne, adjective, adverb.