About The Word Nautilus
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Learn about the word Nautilus to help solve your crossword puzzle. Discover Nautilus definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Nautilus
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Nautilus Definition And Meaning |
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What's The Definition Of Nautilus?
[n] cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions
[n] cephalopod mollusk of warm seas whose females have delicate papery spiral shells [n] a submarine that is propelled by nuclear power Synonyms | Synonyms for Nautilus: Argonauta argo | chambered nautilus | nuclear submarine | nuclear-powered submarine | paper nautilus | pearly nautilus Related Terms | Find terms related to Nautilus: See Also | Argonauta | cephalopod | cephalopod mollusk | genus Argonauta | genus Nautilus | octopod | pigboat | sub | submarine | U-boat Nautilus In Webster's Dictionary \Nau"ti*lus\, n.; pl. E. {Nautiluses}, L. {Nautili}.
[L., fr. gr. nayti`los a seaman, sailor, a kind of shellfish
which was supposed to be furnished with a membrane which
served as a sail; fr. nay^s ship. See {Nave} of a church.]
1. (Zo["o]l.) The only existing genus of tetrabranchiate
cephalopods. About four species are found living in the
tropical Pacific, but many other species are found fossil.
The shell is spiral, symmetrical, and chambered, or
divided into several cavities by simple curved partitions,
which are traversed and connected together by a continuous
and nearly central tube or siphuncle. See
{Tetrabranchiata}.
Note: The head of the animal bears numerous simple tapered
arms, or tentacles, arranged in groups, but not
furnished with suckers. The siphon, unlike, that of
ordinary cephalopods, is not a closed tube, and is not
used as a locomotive organ, but merely serves to
conduct water to and from the gill cavity, which
contains two pairs of gills. The animal occupies only
the outer chamber of the shell; the others are filled
with gas. It creeps over the bottom of the sea, not
coming to the surface to swim or sail, as was formerly
imagined.
2. The argonaut; -- also called {paper nautilus}. See
{Argonauta}, and {Paper nautilus}, under {Paper}.
3. A variety of diving bell, the lateral as well as vertical
motions of which are controlled, by the occupants.
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