junction

noun

junc·​tion ˈjəŋ(k)-shən How to pronounce junction (audio)
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
junctional
ˈjəŋ(k)-sh(ə-)nəl
 How to pronounce junction (audio)
adjective

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Each junction behaves slightly differently, forming a complex 3D network that is impossible to exactly replicate. Rupendra Brahambhatt, Interesting Engineering, 19 Oct. 2025 Canal supporters identified the break in the Appalachian Mountains at the junction of the Mohawk River and the Hudson as a propitious place to dig a channel to Lake Erie. Christine Keiner, The Conversation, 15 Oct. 2025 Crossing a saddle into Sterling Canyon, the trail ends at the junction with Vultee Arch Trail. Roger Naylor, AZCentral.com, 10 Oct. 2025 Damage can also flare into tricky parts of the muscle, either below the tendon or towards the T-junction (the bottom of the hamstring), and physios say these are the most challenging. Gregg Evans, New York Times, 9 Oct. 2025 See All Example Sentences for junction

Word History

Etymology

Latin junction-, junctio, from jungere to join — more at yoke

First Known Use

1711, in the meaning defined at sense 1

Time Traveler
The first known use of junction was in 1711

Browse Nearby Words

Cite this Entry

“Junction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/junction. Accessed 29 Oct. 2025.

Kids Definition

junction

noun
junc·​tion ˈjəŋ(k)-shən How to pronounce junction (audio)
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 How to pronounce junction (audio)
: a place or point of meeting
the structure of the synaptic junction as revealed by electron microscopy
see neuromuscular junction
junctional adjective

More from Merriam-Webster on junction

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