A node is a point of connection. Technically, a traffic intersection is a node since multiple roads connect at that point.
Another type of node is a round swelling. Some are abnormal, like a node you discover on your knee, but others, such as a lymph node, are a normal part of your immune system. You can also find a node on a plant: it’s the swelling on the stem marking the spot where leaves emerge. Computer techs know that a node can also be a piece of equipment — like your cable modem — in a computer network. In a sense, that kind of node is also a connecting point — like the traffic intersection.
any thickened enlargement
any bulge or swelling of an anatomical structure or part
(botany) the small swelling that is the part of a plant stem from which one or more leaves emerge
(physics) the point of minimum displacement in a periodic system
the source of lymph and lymphocytessee more
axillary nodeany of the lymph glands of the armpit; fights infections in the neck and chest and arm regions
Peter’s gland, Peyer’s patchany of several lymph nodes in the walls of the intestines near the junction of the ileum and colon
buboa lymph node that is inflamed and swollen because of plague or gonorrhea or tuberculosis
- axillary node
(computer science) any computer that is hooked up to a computer network
a connecting point at which several lines come together
(astronomy) a point where an orbit crosses a plane