<p><strong>Noun:</strong></p><ul><li>A centering point of component parts: The electrical connections all ran through a central node.</li><li>A knot, protuberance, or knob: protruding nodes on a bicycle seat.</li><li>Anatomy: a knotlike mass of tissue: lymph node.</li><li>Pathology: a circumscribed swelling.</li><li>Botany: a joint in a stem.</li><li>A part of a stem that normally bears a leaf.</li><li>Computers: a connection point in a network that is a processing device with an assigned address, as a router, computer terminal, peripheral device, or mobile device: nodes on the internet; in a well-designed network, the failure of one computer node does not cause a failure in the network.</li><li>A data point or cluster within a tree or other information structure, as defined by its relationship to another data point or cluster: The nodes in an artificial neural network are connected to each other to send and receive information, much like the neurons of the human brain.</li><li>The directory node governs several constituent files.</li><li>Mathematics: knot 1 (def 12).</li><li>Geometry: a point on a curve or surface at which there can be more than one tangent line or tangent plane.</li><li>Physics: a point, line, or region in a standing wave at which there is relatively little or no vibration.</li><li>Astronomy: either of the two points at which the orbit of a heavenly body intersects a given plane, especially the plane of the ecliptic or of the celestial equator. Compare ascending node, descending node.</li><li>Linguistics: an element of a tree diagram that represents a constituent of a linguistic construction.</li><li>Optics: nodal point.</li><li>Engineering: panel point.</li></ul>