immigration
/ˌɪmɪˈgreɪʃn ˌइमिˈग्रेश्न्/ noun [U] 1 the process of coming to live permanently in a country that is not your own; the number of people who do this दूसरे देश मे आकर वहाँ स्थायी रूप से बसने की प्रक्रिया, आप्रवासन; आप्रवासियों की संख्या
There are greater controls on immigration than there used to be.
a fall in immigration
2 ( also immigration control ) the control point at an airport, port, etc. where the official documents of people who want to come into a country are checked हवाई अड्डे, बंदरगाह आदि पर नियंत्रण कक्ष जहाँ आप्रवासियों की आधिकारिक दस्तावेज़ों की जाँच की जाती है
When you leave the plane you have to go through customs and immigration.