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   node

   /nəʊd/

   noun

   • 1. a point in a network or diagram at which lines or pathways intersect or branch: "the intersections of two or more such arteries would clearly become major nodes of traffic and urban activity"
   • ▪ a piece of equipment, such as a computer or peripheral, attached to a network: "the company's internal worldwide area network now has some 22,000 nodes"
   • ▪ (in generative grammar) a vertex or end point in a tree diagram.
   • ▪ a point at which a curve intersects itself.
   • ▪ either of the two points at which a planet's orbit intersects the plane of the ecliptic or the celestial equator.
   • 2. the part of a plant stem from which one or more leaves emerge, often forming a slight swelling: "the stem is cut midway between nodes"
   • 3. a lymph node or other structure consisting of a small mass of differentiated tissue: "infection in these nodes may lead to backache"
   • 4. a point at which the amplitude of vibration in a standing wave system is zero.
   • ▪ a point at which a harmonic function has the value zero, especially a point of zero electron density in an orbital.
   • ▪ a point of zero current or voltage.

   Word Origin late Middle English (denoting a knotty swelling or a protuberance): from Latin nodus ‘knot’.

   Scrabble Points: 5

   • N

     1

   • O

     1

   • D

     2

   • E

     1

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