node in Japanese

(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 ☋.

(graph theory) A vertex or a leaf in a graph of a network, or other element in a data structure.

(graph theory) A vertex or a leaf in a graph of a network, or other element in a data structure.