interstate

1 of 2

adjective

in·​ter·​state ˌin-tər-ˈstāt How to pronounce interstate (audio)
: of, connecting, or existing between two or more states especially of the U.S.
interstate commerce

interstate

2 of 2

noun

in·​ter·​state ˈin-tər-ˌstāt How to pronounce interstate (audio)
: any of a system of expressways connecting most major U.S. cities

called also interstate highway

Examples of interstate in a Sentence

Noun You'll get there quicker if you take the interstate.
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.
Adjective
When construction started a year later, plans for a new interstate freeway threatened the land through eminent domain. Rachel Chang, Travel + Leisure, 20 Mar. 2025 Specifically, the bill would allow the Indiana Department of Transportation to submit a request to the Federal Highway Administration for a waiver to toll lanes on interstate highways. Alexandra Kukulka, Chicago Tribune, 20 Mar. 2025
Noun
The Honda driver swerved to avoid the stopping device and continued on the interstate, according to the warrant affidavits. Justin Muszynski, Hartford Courant, 27 Mar. 2025 Those traveling by the site on the interstate are able to get a peek at production as vehicles travel by conveyor belt from the paint shop to the general assembly area of the plant. Paul Du Quenoy, MSNBC Newsweek, 26 Mar. 2025 See All Example Sentences for interstate

Word History

First Known Use

Adjective

1844, in the meaning defined above

Noun

1968, in the meaning defined above

Time Traveler
The first known use of interstate was in 1844

Browse Nearby Words

Cite this Entry

“Interstate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interstate. Accessed 4 Apr. 2025.

Kids Definition

interstate

1 of 2 adjective
in·​ter·​state ˌint-ər-ˈstāt How to pronounce interstate (audio)
: of, connecting, or existing between states especially of the U.S.
interstate highways

interstate

2 of 2 noun
in·​ter·​state ˈint-ər-ˌstāt How to pronounce interstate (audio)
: an interstate highway

More from Merriam-Webster on interstate

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