Nautically
(Nau"tic*al*ly), adv. In a nautical manner; with reference to nautical affairs.
Nautiform
(Nau"ti*form) a. [Gr. nay^s ship + -form.] Shaped like the hull of a ship.
Nautilite
(Nau"ti*lite) n. (paleon.) A fossil nautilus.
Nautiloid
(Nau"ti*loid) a. [Nautilus + -oid: cf. F. nautiloïde.] (Zoöl.) Like or pertaining to the nautilus; shaped
like a nautilus shell. — n. A mollusk, or shell, of the genus Nautilus or family Nautilidæ.
Nautilus
(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. (Zoöl.) 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.
Navajoes
(Na"va*joes) n. pl.; sing. Navajo (Ethnol.) A tribe of Indians inhabiting New Mexico and
Arizona, allied to the Apaches. They are now largely engaged in agriculture.
Naval
(Na"val) a. [L. navalis, fr. navis ship: cf. F. naval. See Nave of a church.] Having to do with
shipping; of or pertaining to ships or a navy; consisting of ships; as, naval forces, successes, stores, etc.
