Submarine \Sub`ma*rine"\, a. Being, acting, or growing, under water in the sea; as, submarine navigators; submarine plants. {Submarine armor}, a waterproof dress of strong material, having a helmet into which air for breathing is pumped through a tube leading from above the surface to enable a diver to remain under water. {Submarine cable}. See {Telegraph cable}, under {Telegraph}. {Submarine mine}. See {Torpedo}, 2 (a) .