interstate

1 of 2

adjective

in·​ter·​state ˌin-tər-ˈstāt 

: 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 

: 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

Adjective

Threatening to kill a federal officer carries a potential sentence of up to 10 years in prison, while making threatening interstate communications may result in up to five years in prison, prosecutors said. —Jasmine Baehr, FOXNews.com, 24 Jan. 2026

Winston’s team did meet several people, hidden and tucked under interstate overpasses. —Charlotte Observer, 23 Jan. 2026

Noun

The project will sink the interstate below ground level between Airport Boulevard and Lady Bird Lake, add two carpool lanes in each direction, scrap the upper decks north of downtown, widen bridges and add bike and pedestrian infrastructure. —Alex Driggars, Austin American Statesman, 3 Feb. 2026

The $346 million project began in 2019 and will open one express lane in each direction along one of the busiest stretches of interstate in the region. —Charlotte Observer, 3 Feb. 2026

Word History

First Known Use

Adjective

1844, in the meaning defined above

Noun

1968, in the meaning defined above

Rhymes for interstate

• abdicate
• abrogate
• acetate
• activate
• actuate
• adsorbate
• aggravate
• agitate
• alginate
• alienate
• allocate
• amputate

Kids Definition

interstate

1 of 2 adjective

in·​ter·​state ˌint-ər-ˈstāt 

: of, connecting, or existing between states especially of the U.S.

interstate highways

interstate

2 of 2 noun

in·​ter·​state ˈint-ər-ˌstāt 

: an interstate highway