nautilus

enUK

nau·ti·lus

N0034000 (nôt′l-əs)n. pl. nau·ti·lus·es or nau·ti·li (nôt′l-ī′) 1. 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.2. The paper nautilus.

[Latin, from Greek nautilos, sailor, nautilus, from nautēs, mariner, from naus, ship; see nāu- in Indo-European roots.]

nautilus

(ˈnɔːtɪləs) n, pl -luses or -li (-ˌlaɪ) 1. (Animals) any cephalopod mollusc of the genus Nautilus, esp the pearly nautilus2. (Animals) short for paper nautilus[C17: via Latin from Greek nautilos sailor, from naus ship]

nau•ti•lus

(ˈnɔt l əs, ˈnɒt-)

n., pl. nau•ti•lus•es, nau•ti•li (ˈnɔt lˌaɪ, ˈnɒt-) 1. Also called chambered nautilus, pearly nautilus. any cephalopod of the genus Nautilus having a spiral, chambered shell with a pearly interior. 2. paper nautilus. [1595–1605; < Latin < Greek nautílos paper nautilus, literally, sailor, derivative of naûs ship]

nau·ti·lus

(nôt′l-əs) A tropical sea mollusk having a spiral shell with alternating white and light-brown bands on the outside and many chambers on the inside. The nautilus is related to the squids and octopuses.

Thesaurus

Noun	1.	nautilus - a submarine that is propelled by nuclear powernuclear submarine, nuclear-powered submarinepigboat, submarine, U-boat, sub - a submersible warship usually armed with torpedoes
	2.	nautilus - cephalopod mollusk of warm seas whose females have delicate papery spiral shellsArgonauta argo, paper nautilus, Argonautoctopod - a cephalopod with eight arms but lacking an internal shellArgonauta, genus Argonauta - type genus of the family Argonautidae: paper nautilus
	3.	nautilus - cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitionschambered nautilus, pearly nautiluscephalopod, cephalopod mollusk - marine mollusk characterized by well-developed head and eyes and sucker-bearing tentaclesgenus Nautilus - type genus and sole recent representative of the family Nautilidae

Translations

nautilus

enUK

nautilus

chambered nautilus,

cephalopodcephalopod
, member of the class Cephalopoda, the most highly organized group of mollusks (phylum Mollusca), and including the squids, octopuses, cuttlefish, and nautiluses. The class as a whole has become adapted for a free-swimming existence.
..... Click the link for more information. mollusk belonging to the sole surviving genus (Nautilus) of a subclass that flourished 200 million years ago, known as the nautiloids. The spirally coiled shell consists of a series of chambers; as the nautilus grows it secretes larger chambers, sealing off the old ones with thin septa. The animal lives in the largest and newest chamber, with a tubular elongation of the body, known as the siphuncle, extending through the septa to the apex of the shell. The siphuncle removes liquid from the chambers and replaces it with gas, giving the animal the buoyancy that permits it to swim (backwards except when feeding), which it accomplishes by ejecting water through a funnel.

The nautilus breathes by means of two pairs of gills; it feeds on crabs and other animals, which it catches with its long, slender tentacles (numbering more than 90) that encircle the mouth. There is a thickened area over the head, called the hood, that acts as a protective lid when the animal withdraws into the shell. The nautilus lives in deep water in the S Pacific and Indian oceans. It is active at night; during the day it stays hidden in coral crevices. It is hunted for its shell, which is used in jewelry and ornaments.

The paper nautiluspaper nautilus
or argonaut,
pelagic, surface-dwelling cephalopod mollusk of the genus Argonauta. Like the closely related octopus, the paper nautilus has a rounded body, eight tentacles, and no fins. It is so named for the beautiful papery shell, up to 8 in.
..... Click the link for more information. , which is not a true nautilus, is a close relative of the octopus, belonging to the order Octopoda. The true nautilus is classified in the phylum MolluscaMollusca
, taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period.
..... Click the link for more information. , class Cephalopoda, order Nautilida, family Nautilidae.

Nautilus:

see submarinesubmarine,
naval craft capable of operating for an extended period of time underwater. Submarines are almost always warships, although a few are used for scientific, business, or other purposes (see also submersible).
..... Click the link for more information. .

Nautilus

a genus of invertebrates of the superorder Nautiloidea and the class Cephalopoda.

Nautilus is now the only living group of the subclass Tetrabranchia. The shell is large (up to 30 cm in diameter) and external, spirally coiled in a single plane, and divided by partitions into a series of chambers. The body of the mollusk is located in the last and largest chamber. The chambers serve the animal as a hydrostatic apparatus. To descend, it fills them with water to varying degrees, while to rise it fills them with a gas with a high content of nitrogen. There are several species, which are found in the Indian Ocean and the western part of the Pacific. Nautilus crawls along the bottom (at shallow depths) or swims on the surface of the water. It feeds on small crabs and fish.

Nautilus

[′nȯd·ə·ləs] (invertebrate zoology) The only living genus of the molluscan subclass Nautiloidea, containing the only living cephalopods with an external chambered shell and numerous cephalic tentacles, six species live in the western Pacific and around the East Indies.

Nautilus

submarine in which its builder, Captain Nemo, cruises around the world. [Fr. Lit.: Jules Verne Twenty Thousand Leagues Under the Sea]See: Adventurousness

nautilus

1. any cephalopod mollusc of the genus Nautilus, esp the pearly nautilus 2. short for paper nautilus

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chambered nautilus,

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Synonyms for nautilus

noun a submarine that is propelled by nuclear power

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noun cephalopod mollusk of warm seas whose females have delicate papery spiral shells

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noun cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions

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