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
When powered by concentrated sunlight via a triple-junction solar cell, the device produced hydrogen at a record rate of 519 micromoles per hour per square centimeter.
—
Aman Tripathi, Interesting Engineering, 4 Jan. 2026
The wet weather, combined with an earlier storm over the Christmas and New Year’s holidays, was also responsible for the shuttering of all lanes on a 27-mile stretch of the 101 Freeway extending from the junction of SR1 and Highway 1 to Winchester Canyon Road in Goleta due to heavy flooding.
—Deborah Netburn, Los Angeles Times, 4 Jan. 2026
Highways, viaducts, giant interchanges, and a major Metro junction viciously mutilated São Paulo’s downtown in the 1960s and ’70s, demoting it from a popular residential area to a commercial transfer hub, overcrowded and polluted by day but forlorn by night.
—Michaëla De Lacaze Mohrmann, Artforum, 1 Jan. 2026
Taiwan lies near the junction of two tectonic plates and is prone to earthquakes.
—CNN Money, 27 Dec. 2025
See All Example Sentences for junction
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Aman Tripathi, Interesting Engineering, 4 Jan. 2026
The wet weather, combined with an earlier storm over the Christmas and New Year’s holidays, was also responsible for the shuttering of all lanes on a 27-mile stretch of the 101 Freeway extending from the junction of SR1 and Highway 1 to Winchester Canyon Road in Goleta due to heavy flooding.
—Deborah Netburn, Los Angeles Times, 4 Jan. 2026
Highways, viaducts, giant interchanges, and a major Metro junction viciously mutilated São Paulo’s downtown in the 1960s and ’70s, demoting it from a popular residential area to a commercial transfer hub, overcrowded and polluted by day but forlorn by night.
—Michaëla De Lacaze Mohrmann, Artforum, 1 Jan. 2026
Taiwan lies near the junction of two tectonic plates and is prone to earthquakes.
—CNN Money, 27 Dec. 2025
See All Example Sentences for junction
Cite this Entry
“Junction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/junction. Accessed 10 Jan. 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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