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
Researchers have created a new molecule that naturally forms p/n junctions, structures that are vital for converting sunlight into electricity.
—
Prabhat Ranjan Mishra, Interesting Engineering, 22 Jan. 2026
The crash has caused an extended closure of southbound Highway 70 near the Highway 99 junction, Caltrans said.
—Richard Ramos, CBS News, 21 Jan. 2026
Every home has little cracks between where wires come out of drywall and other pathways where lights or junction boxes go.
—Karl Schneider, IndyStar, 21 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
See All Example Sentences for junction
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Prabhat Ranjan Mishra, Interesting Engineering, 22 Jan. 2026
The crash has caused an extended closure of southbound Highway 70 near the Highway 99 junction, Caltrans said.
—Richard Ramos, CBS News, 21 Jan. 2026
Every home has little cracks between where wires come out of drywall and other pathways where lights or junction boxes go.
—Karl Schneider, IndyStar, 21 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
See All Example Sentences for junction
Cite this Entry
“Junction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/junction. Accessed 30 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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