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
Semiconductor controls continue to govern advanced nodes; outbound investment screening has deep institutional support; critical infrastructure and data concerns persist across multiple agencies.
—
Dewardric L. McNeal, CNBC, 31 Dec. 2025
As festivals become nodes in a larger system rather than endpoints, expect more moments of amplification and fewer tidy resolutions.
—Dana Harris-Bridson, IndieWire, 29 Dec. 2025
Cut directly below a leaf node and ensure each cutting has at least three or four healthy leaves at the top of its stem.
—Lauren Landers, Better Homes & Gardens, 27 Dec. 2025
Taller buildings can also allow for more green space and parks as part of the plan, just not next to transit nodes.
—Phillip Molnar, San Diego Union-Tribune, 25 Dec. 2025
See All Example Sentences for node
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Dewardric L. McNeal, CNBC, 31 Dec. 2025
As festivals become nodes in a larger system rather than endpoints, expect more moments of amplification and fewer tidy resolutions.
—Dana Harris-Bridson, IndieWire, 29 Dec. 2025
Cut directly below a leaf node and ensure each cutting has at least three or four healthy leaves at the top of its stem.
—Lauren Landers, Better Homes & Gardens, 27 Dec. 2025
Taller buildings can also allow for more green space and parks as part of the plan, just not next to transit nodes.
—Phillip Molnar, San Diego Union-Tribune, 25 Dec. 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 7 Jan. 2026.
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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