1. to bring under imperial control or dominion; to make part of an empire
Usage: British spelling (American: imperializes); third person singular present tense
2. to extend imperial influence, authority, or culture over a region or people
Usage: British spelling (American: imperializes); third person singular present tense

Examples

• The empire imperialises new territories through military campaigns.
• Britain imperialises regions across Africa and Asia during the 19th century.
• The policy imperialises local cultures by imposing foreign customs and languages.
• Colonial powers imperialise indigenous lands for economic gain.
• The nation imperialises its neighbors to expand its sphere of influence.
• Historical accounts describe how empires imperialise weaker states.