What does Xiphias gladius mean?
• XIPHIAS GLADIUS (noun) The noun XIPHIAS GLADIUS has 1 sense: 1. large toothless marine food fish with a long swordlike upper jaw; not completely cold-blooded i.e. they are able to warm their brains and eyes: worldwide in warm waters but feed on cold ocean floor coming to surface at night Familiarity information: XIPHIAS GLADIUS used as a noun is very rare.