interstate meaning and definition

INTERSTATE noun

Definition of interstate (noun)

1. one of the system of highways linking major cities in the 48 contiguous states of the United States
   • synonyms: interstate highway

INTERSTATE adjective

Definition of interstate (adjective)

1. involving and relating to the mutual relations of states especially of the United States
   • "Interstate Highway Commission"; "interstate highways"; "Interstate Commerce Commission"; "interstate commerce"
   • antonym: intrastate