interstate
Americanadjective
noun
-
a highway serving two or more states.
-
(sometimes initial capital letter) a highway that is part of the nationwide U.S. Interstate Highway System.
adjective
adverb
verb
Other Word Forms
- noninterstate adjective
Etymology
Origin of interstate
Compare meaning
How does interstate compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
If something is interstate, it happens between different U.S. states. For example, you can drive on Interstate 80 from downtown San Francisco, California to Teaneck, New Jersey. Yep, that's a trip. If you're driving from Rhode Island to Illinois, you can call it interstate travel, or an interstate road trip — you're going from state to state. An interstate highway connects different states together, like I-95, which is an east coast interstate highway that stretches from Maine to Florida. For short, you can call a road like this an interstate. This 20th century word combines inter-, "between," and state.
Vocabulary lists containing interstate
Chapter 11: Growth and Expansion
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
The Constitution
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
I Survived Hurricane Katrina, 2005
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
All the other states, who controlled international and interstate migration, were restrictionist.
From Slate • Mar. 16, 2026
The requested two-year exemption would allow Zoox to make and deploy its vehicles for interstate commerce, according to the application.
From MarketWatch • Mar. 11, 2026
Railroads transformed interstate commerce and fueled economic expansion, but they also produced boom-bust cycles, excess capacity, and intense volatility.
From Barron's • Feb. 23, 2026
Liens are recorded in state Uniform Commercial Code databases across the country, with the public filings intended to standardize interstate transactions and alert creditors about business debts and financial obligations.
From Los Angeles Times • Jan. 6, 2026
They were called the Freedom Riders, and their goal was to change segregated interstate travel, along with everyone’s life forever.
From "The Freedom Writers Diary" by The Freedom Writers
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
