Definitions from Wiktionary ( )

▸ noun:  A knot, knob, protuberance or swelling.
▸ noun:  (astronomy) The point where the orbit of a planet, as viewed from the Sun, intersects the ecliptic. The ascending and descending nodes refer respectively to the points where the planet moves from South to North and N to S; their respective symbols are ☊ and ☋.
▸ noun:  (botany) A leaf node.
▸ noun:  (networking) A computer or other device attached to a network.
▸ noun:  (engineering) The point at which the lines of a funicular machine meet from different angular directions.
▸ noun:  (geometry) The point at which a curve crosses itself, being a double point of the curve. See crunode and acnode.
▸ noun:  (geometry) A similar point on a surface, where there is more than one tangent-plane.
▸ noun:  (graph theory) A vertex or a leaf in a graph of a network, or other element in a data structure.
▸ noun:  (medicine) 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.
▸ noun:  (physics) A point along a standing wave where the wave has minimal amplitude.
▸ noun:  (rare) The knot, intrigue, or plot of a dramatic work.
▸ noun:  (technical) A hole in the gnomon of a sundial, 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.
▸ noun:  (computational linguistics) The word of interest in a KWIC, surrounded by left and right cotexts.
▸ noun:  (electronics) A region of an electric circuit connected only by (ideal) wires (i.e the voltage between any two points on the same node must be zero).
▸ noun:  (syntax) A point in a parse tree that can be assigned a syntactic category label.
▸ noun:  (biology) A point in a cladogram from which two clades branch, representing the presumed ancestor.
▸ noun:  Acronym of New Oxford Dictionary of English.

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