Node (?), n. [L. nodus; perh. akin to E. knot. Cf. Noose, Nowed.]
1. A knot, a knob; a protuberance; a swelling.
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.
The joint of a stem, or the part where a leaf or several leaves are inserted.
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.
The point at which a curve crosses itself, being a double point of the curve. See Crunode, and Acnode.
The point at which the lines of a funicular machine meet from different angular directions; -- called also knot. W. R. Johnson.
The knot, intrigue, or plot of a piece.
A hard concretion or incrustation which forms upon bones attacked with rheumatism, gout, or syphilis; sometimes also, a swelling in the neighborhood of a joint. Dunglison.
One of the fixed points of a sonorous string, when it vibrates by aliquot parts, and produces the harmonic tones; nodal line or point.
Ascending node Astron., the node at which the body is passing northerly, marked with the symbol &astascending;, called the Dragon's head. Called also northern node. -- Descending node, the node at which the body is moving southwardly, marked thus &astdescending;, called Dragon's tail. -- Line of nodes, a straight line joining the two nodes of an orbit.
© Webster 1913.