Nodal line, Nodal point, in a vibrating plate or cord, that line or point which remains at rest while the other parts of the body are in a state of vibration.

(No"da*ted) a. [L. nodatus, p. p. of nodare to make knotty, fr. nodus knot. See Node.] Knotted.

Nodated hyperbola(Geom.), a certain curve of the third order having two branches which cross each other, forming a node.

(No*da"tion) n. [L. nodatio knottiness.] Act of making a knot, or state of being knotted. [R.]

(Nod"der) n. One who nods; a drowsy person.

(Nod"ding) a. Curved so that the apex hangs down; having the top bent downward.

(Nod"dle) n. [OE. nodil, nodle; perh. fr. nod, because the head is the nodding part of the body, or perh. akin to E. knot; cf. Prov. E. nod the nape of the neck.]

1. The head; - - used jocosely or contemptuously.

Come, master, I have a project in my noddle.

2. The back part of the head or neck. [Obs.]

For occasion . . . turneth a bald noddle, after she hath presented her locks in front, and no hold taken.

(Nod"dy) n.; pl. Noddies [Prob. fr. nod to incline the head, either as in assent, or from drowsiness.]

1. A simpleton; a fool. L'Estrange.

2. (Zoöl.) (a) Any tern of the genus Anous, as A. stolidus. (b) The arctic fulmar (Fulmarus glacialis). Sometimes also applied to other sea birds.

3. An old game at cards. Halliwell.

4. A small two-wheeled one-horse vehicle.

5. An inverted pendulum consisting of a short vertical flat spring which supports a rod having a bob at the top; — used for detecting and measuring slight horizontal vibrations of a body to which it is attached.

(Node) n. [L. nodus; perh. akin to E. knot. Cf. Noose, Nowed.]

1. A knot, a knob; a protuberance; a swelling.

2. Specifically: (a) (Astron.) One of the two points where the orbit of a planet, or comet, intersects the ecliptic, or the orbit of a satellite intersects the plane of the orbit of its primary. (b) (Bot.) The joint of a stem, or the part where a leaf or several leaves are inserted. (c) (Dialing) A hole in the gnomon of a dial, through which passes the ray of light which marks the hour of the day, the parallels of the sun's declination, his place in the ecliptic, etc. (d) (Geom.) The point at which a curve crosses itself, being a double point of the curve. See Crunode, and Acnode. (e) (Mech.) The point at which the lines of a funicular machine meet from different angular directions; — called also knot. W. R. Johnson. (f) (poet.) The knot, intrigue, or plot of a piece. (g) (Med.) A hard concretion or incrustation which forms upon bones attacked with rheumatism, gout, or syphilis; sometimes also, a swelling in the neighborhood

(Nod"al) a. Of the nature of, or relating to, a node; as, a nodal point.

  By PanEris using Melati.

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