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).


 Div·ing a. That dives or is used or diving.
 Diving beetle Zool., any beetle of the family Dytiscidæ, which habitually lives under water; -- called also water tiger.
 Diving bell, a hollow inverted vessel, sometimes bell-shaped, in which men may descend and work under water, respiration being sustained by the compressed air at the top, by fresh air pumped in through a tube from above.
 Diving dress. See Submarine armor, under Submarine.
 Diving stone, a kind of jasper.

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