(chiefly, US, and, Australia) Of, or relating to two or more states.
The difference between intrastate and interstate prison transfers, Justice Blackmun said, "is a matter of degree, not of kind," while confinement in a mental hospital is qualitatively different than an ordinary prison sentence.
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(chiefly, US, and, Australia) Crossing states (usually provincial state, but also e.g. multinational sense).
The truck driver drove interstate to unload.
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(US) A freeway that is part of the Interstate Highway System.
The speed-limit increase would not apply to Delaware, where the interstates are all near populated areas.
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Add your own interpretation of "interstate".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.