interstate Meaning, Definition & Usage

  1. noun one of the system of highways linking major cities in the 48 contiguous states of the United States
    interstate highway.
  2. adjective involving and relating to the mutual relations of states especially of the United States
    • Interstate Highway Commission
    • interstate highways
    • Interstate Commerce Commission
    • interstate commerce

WordNet

In"ter*state` adjective
Definitions
  1. Pertaining to the mutual relations of States; existing between, or including, different States; as, interstate commerce. Story.

Webster 1913