- Node (botany) , the place on a plant stem where a leaf is attached
- Node (physics) , a spatial locus along a standing wave where the wave has minimal amplitude
- Node (networking) , a device connected to a network, such as a computer or router
- Node (computer Science) , a basic unit used to build Data Structures , such as Linked Lists and Tree Data Structures
- Node (circuits) , a region in an electrical circuit where there is no change in potential
- Orbital Node , one of two points where a body's orbit crosses the ecliptic, called the ''ascending node'' and ''descending node''
- Lunar Node
- Transport Node
- Node (computer Gaming) , a particular style of adventure game
may also be:
- In other languages, the words for node and Knot are the same.
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