1 of 2


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


2 of 2


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
Currently, the fragmented status of interstate care will include many legal questions and political maneuverings. Danielle Marie Holland, Parents, 19 Apr. 2024 In December, Pence pleaded guilty to one count of the use of a facility of interstate commerce in connection with murder-for-hire, court records show. Julia Marnin, Sacramento Bee, 8 Apr. 2024 The suspect was charged with using fire to damage a building used in interstate commerce and as a place of activity affecting interstate commerce, according to a federal complaint. Bill Hutchinson, ABC News, 7 Apr. 2024 The simple reason is that the bridge is part of the federal interstate highway system. Edward Lotterman, Twin Cities, 31 Mar. 2024 Constitutional Authority: Advocates for the CTA could argue that Congress possesses the constitutional right to enact this law, leveraging its authority to regulate interstate commerce and impose taxes. Matthew Erskine, Forbes, 29 Mar. 2024 Of the three interstate crossings into downtown Baltimore, this is the only bridge. Suzanne Nuyen, NPR, 26 Mar. 2024 In anticipation of the 1996 Olympics, the city implemented stringent measures to crack down on traffic and ensure public safety — dead-ending the festivities by barricading streets and interstate exits. Janay Kingsberry, Washington Post, 21 Mar. 2024 Additionally, pasteurization — which is required for milk entering interstate commerce — kills bacteria and viruses, including influenza. Joe Hernandez, NPR, 31 Mar. 2024
The deputy said Thompson was under arrest, but Thompson fled toward the interstate, the lawsuit says. Daniella Segura, Sacramento Bee, 17 Apr. 2024 Drivers aiming to reach I-10 may do so through the Mini Stack interchange between the interstate and State Route 51 or by using westbound and northbound Loop 202 (South Mountain Freeway) before switching to I-10 near 59th Street in the West Valley. Madeline Nguyen, The Arizona Republic, 12 Apr. 2024 Within five miles of entering the interstate, Celestine allegedly fired a weapon and struck another vehicle multiple times. Antonio Planas, NBC News, 9 Apr. 2024 The interstate will get fourth lanes, from Regina Graeter to Ronald Reagan, after that. The Enquirer, 9 Apr. 2024 Parking on the shoulder of an interstate is only allowed in an emergency. Marina Johnson, The Indianapolis Star, 30 Mar. 2024 Multiple crashes were reported on an interstate in Waco, Texas, a city in the path of totality, where several festivities and eclipse viewing events were scheduled. John Bacon, USA TODAY, 8 Apr. 2024 The initiative — dubbed Moving Florida Forward — sets aside $4 billion in state funds for projects to improve major interstates and roadways throughout Florida. Max Greenwood, Miami Herald, 1 Apr. 2024 Traffic congestion is expected to be a major issue, especially on interstates. Jamie Carter, Forbes, 30 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'interstate.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use


1844, in the meaning defined above


1968, in the meaning defined above

Time Traveler
The first known use of interstate was in 1844

Dictionary Entries Near interstate

Cite this Entry

“Interstate.” Dictionary, Merriam-Webster, Accessed 24 Apr. 2024.

Kids Definition


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


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

More from Merriam-Webster on interstate

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!