junction
noun
junc·tion
ˈjəŋ(k)-shən 
1
: an act of joining : the state of being joined
2
a
: a place or point of meeting
b
: an intersection of roads especially where one terminates
c
: a point (as in a thermocouple) at which dissimilar metals make contact
d
: an interface in a semiconductor device between regions with different electrical characteristics
3
: something that joins
Examples of junction in a Sentence
a junction of nerves and muscle
the junction of Route 12 and Route 87
Recent Examples on the Web
The citric acid reacted with the cellulose to form cross-links, which are chemical junctions that bind the cellulose molecules.
—
J. Carson Meredith, The Conversation, 17 Mar. 2026
Like many others on our list, this junction sits near a freeway.
—Terry Castleman, Los Angeles Times, 10 Mar. 2026
The idea for the developer, Integral Communities of Newport Beach, to build the bridge was approved in 2019 as part of the second phase of the 577-acre development, which sits at the northwest corner of the Interstate 5-Highway 99 junction.
—Madison Smalstig, Sacbee.com, 5 Mar. 2026
The traffic backup on I-275 reached up to the I-696 junction at Novi by that time, with heavy traffic extending further back as morning commutes picked up.
—Paula Wethington, CBS News, 5 Mar. 2026
See All Example Sentences for junction
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J. Carson Meredith, The Conversation, 17 Mar. 2026
Like many others on our list, this junction sits near a freeway.
—Terry Castleman, Los Angeles Times, 10 Mar. 2026
The idea for the developer, Integral Communities of Newport Beach, to build the bridge was approved in 2019 as part of the second phase of the 577-acre development, which sits at the northwest corner of the Interstate 5-Highway 99 junction.
—Madison Smalstig, Sacbee.com, 5 Mar. 2026
The traffic backup on I-275 reached up to the I-696 junction at Novi by that time, with heavy traffic extending further back as morning commutes picked up.
—Paula Wethington, CBS News, 5 Mar. 2026
See All Example Sentences for junction
Cite this Entry
“Junction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/junction. Accessed 21 Mar. 2026.
Copy CitationKids Definition
junction
noun
junc·tion
ˈjəŋ(k)-shən
1
: an act of joining : the state of being joined
2
: a place or point of meeting
a railroad junction
Medical Definition
junction
noun
junc·tion
ˈjəŋ(k)-shən
: a place or point of meeting
the structure of the synaptic junction as revealed by electron microscopy
see neuromuscular junction
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