D defs.my
Entry 1 sense Webster, 1913

interstate commerce

/ĭnˌ-tẽrs-tāt' käm'-ẽrs/ · in·ter·state· com·merce · IPA
01 n. Commerce that involves transportation of articles of commerce across state lines.
  1. 1.
    Commerce that involves transportation of articles of commerce across state lines.[U.S.]