Intrastate is defined as within a state.
An example of something intrastate is trade between northern and southern California.
within a state; esp., within a state of the U.S.
Relating to or existing within the boundaries of a state.
- (US)Within (intra-) a state.
- This isn't an interstate highway so it must be only an intrastate road.
- (US)A highway completely within a state (not an interstate).