Definition of intercolonial
1
: occurring or existing between two or more colonies
- intercolonial trade/travel
- nearly resulted in bringing about an intercolonial war between Pennsylvania and Virginia.
- —Theodore Roosevelt
2
: of, relating to, or constituting a group or association having members in two or more colonies
- The actions of this intercolonial legislature would be subject to the veto of the British government
- —Henry W. Bragdon et al.
