Search Dictionary
Definition of interstate

interstate

/ˌɪntərˈsteɪt/
in · ter · state

Plural:interstates
JUMP TO:

interstate Lexical Profile

interstate Game Scores & Validity

• adjective

1

American Existing, occurring, or carried on between two or more states, especially within the United States or Australia.

Example

"The federal government holds constitutional authority to regulate interstate commerce and transportation."

• noun

1

American One of a system of major limited-access highways connecting principal cities and regions across the United States.

Example

"We took the interstate to bypass the downtown traffic and reach the neighboring state much faster."

Synonyms
View all synonyms for interstate

Word Nuance & Usage

Frequently confused with 'intrastate'; 'interstate' refers to commerce, travel, or relations between two or more different states, whereas 'intrastate' refers to activity occurring entirely within the borders of a single state.

• Rhymes for interstate

Word Origin & Etymology

First recorded in the mid-19th century in American English, formed from the Latin prefix 'inter-' (meaning 'between' or 'among') and the noun 'state'. The noun sense referring to a major highway emerged in the 1950s following the creation of the Dwight D. Eisenhower National System of Interstate and Defense Highways.

Cite this Entry


Wordmom. (2026). Definition of Interstate. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/interstate
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.