1
a
: a pathological swelling or enlargement (as of a rheumatic joint)
b
: a discrete mass of one kind of tissue enclosed in tissue of a different kind
2
: an entangling complication (as in a drama) : predicament
3
: either of the two points where the orbit of a planet or comet intersects the ecliptic
also
: either of the points at which the orbit of an earth satellite crosses the plane of the equator
4
a
: a point, line, or surface of a vibrating body or system that is free or relatively free from vibratory motion
b
: a point at which a wave has an amplitude of zero
5
a
: a point at which subsidiary parts originate or center
b
: a point on a stem at which a leaf or leaves are inserted
c
: a point at which a curve intersects itself in such a manner that the branches have different tangents
d
Examples of node in a Sentence
the doctor examined the node on my knee before deciding it was the result of arthritis
Recent Examples on the Web
Use clean scissors or pruning shears to cut stems just below a leaf node.
—
Karen Brewer Grossman, Southern Living, 23 July 2025
The theoretical ratio of energy density between a graphite node and lithium metal is a little over 10.
—Neil Winton, Forbes.com, 20 July 2025
Singapore has long been a regional data center hub due to its infrastructure, lack of natural disasters, and its position as a key node for subsea cables.
—Lionel Lim, Fortune, 17 July 2025
This essay extends the timeline backward while also globalizing the stakes: the Midwest becomes a node in a diasporic network of Black thought and activism.
—The Editors, JSTOR Daily, 17 July 2025
See All Example Sentences for node
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Karen Brewer Grossman, Southern Living, 23 July 2025
The theoretical ratio of energy density between a graphite node and lithium metal is a little over 10.
—Neil Winton, Forbes.com, 20 July 2025
Singapore has long been a regional data center hub due to its infrastructure, lack of natural disasters, and its position as a key node for subsea cables.
—Lionel Lim, Fortune, 17 July 2025
This essay extends the timeline backward while also globalizing the stakes: the Midwest becomes a node in a diasporic network of Black thought and activism.
—The Editors, JSTOR Daily, 17 July 2025
See All Example Sentences for node
Cite this Entry
“Node.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/node. Accessed 29 Jul. 2025.
Copy CitationKids Definition
node
noun1
a
: a thickened or swollen enlargement (as of a joint with rheumatism)
b
: a mass of tissue in the body resembling a knot
2
: a point on a stem at which a leaf is inserted
Medical Definition
node
noun1
a
: a pathological swelling or enlargement (as of a rheumatic joint)
b
: a body part resembling a knot
especially
: a discrete mass of one kind of tissue enclosed in tissue of a different kind see atrioventricular node, lymph node
2
: a point, line, or surface of a vibrating body that is free or relatively free of vibratory motion
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