1 coming to live in a country
ADJ. illegal | large-scale, mass
VERB + IMMIGRATION control, restrict laws restricting immigration into the US
IMMIGRATION + NOUN control, law, policy, rules | authority, officer, official, service
PREP. ~ from There was a sudden increase in immigration from Eastern Europe.
2 (also immigration control) at a port/airport
VERB + IMMIGRATION go/pass through We landed at Heathrow and went through customs and immigration.
IMMIGRATION + NOUN checks, formalities, procedures calls for tighter immigration procedures