Meaning of “colonize” - Learner’s Dictionary

colonize

verb [ T ] ( also UK -ise) uk us /ˈkɒlənaɪz/
SEND PEOPLE

to send people to live in and govern another country:

[ often passive ] Burundi was first colonized by the Germans.
LIVE/GROW

to start growing or living in large numbers in a place:

Weeds quickly colonize areas of cleared ground.
colonist uk us /ˈkɒlənɪst/ noun [ C ]

someone who goes to colonize a country

colonization uk us /ˌkɒlənaɪˈzeɪʃən/ noun [ U ]

(Definition of “colonize” from the Cambridge Learner’s Dictionary © Cambridge University Press)