Lexic.us

Definition of Nautilus

1. Noun. A submarine that is propelled by nuclear power.

2. Noun. Cephalopod mollusk of warm seas whose females have delicate papery spiral shells.

3. Noun. Cephalopod of the Indian and Pacific oceans having a spiral shell with pale pearly partitions.

Definition of Nautilus

1. n. 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.

Definition of Nautilus

1. Noun. A marine mollusc, of the family Nautilidae native to the Pacific Ocean and Indian Ocean, which has tentacles and a spiral shell with a series of air-filled chambers. ¹

¹ Source: wiktionary.com

Definition of Nautilus

1. a spiral-shelled mollusk [n -LUSES or -LI]

Medical Definition of Nautilus

1. Origin: L, fr. Gr. A seaman, sailor, a kind of shellfish which was supposed to be furnished with a membrane which served as a sail; fr. Ship. See Nave of a church. 1. 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. 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. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Nautilus

nautical chain nautical linear unit nautical mile nautical miles nautical signal flag nautical twilight nautically nautics nautiform nautili

nautiliform nautilite nautilites nautiloid nautiloids nautilus (current term) nautiluses navaid navaids navajoes

navajoite naval naval academy naval architect naval architects naval attache naval battle naval blockade naval campaign

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