Noun immigration has 2 senses
  1. immigration, in-migration - migration into a place (especially migration to a country of which you are not a native in order to settle there)
    --1 is a kind of migration
    --1 has particulars: aliyah
    Derived forms: verb immigrate1, verb immigrate3
  2. immigration - the body of immigrants arriving during a specified interval; "the increased immigration strengthened the colony"
    --2 is a kind of
    body
    Derived forms: verb immigrate2, verb immigrate3
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