- any of two genera (Nautilus or Allonautilus) of tropical tetrabranchiate cephalopods having a many-chambered, spiral shell with a pearly interior
- paper nautilus
Origin of nautilusModern Latin ; from Classical Latin ; from Classical Greek nautilos, sailor, nautilus ; from naus, a ship: see navy
nounpl. nau·ti·lus·es or nau·ti·li
- Any of several cephalopod mollusks of the family Nautilidae of the Indian and Pacific Oceans, especially Nautilus pompilius, having numerous slender tentacles and an external coiled pearly shell divided into air-filled chambers. Also called chambered nautilus, pearly nautilus.
- The paper nautilus.
Origin of nautilusLatin, from Greek nautilos, sailor, nautilus, from naut&emacron;s, mariner, from naus, ship; see nau- in Indo-European roots.
(plural nautiluses or nautili)
From Latin nautilus, from Ancient Greek Î½Î±Ï…Ï„Î¯Î»Î¿Ï‚ (nautilos, “paper nautilus, sailor").