migrations

Noun

migration (countable and uncountable, plural migrations)

1. An instance of moving to live in another place for a while.
2. Seasonal moving of animals, as mammals, birds or fish, especially between breeding and non-breeding areas.
   • Many of these classic methods are still used, with some modern improvements. For example, with the aid of special microphones and automated sound detection software, ornithologists recently reported […] that pine siskins (Spinus pinus) undergo an irregular, nomadic type of nocturnal migration.2013 January 1, Paul Bartel, Ashli Moore, “Avian Migration: The Ultimate Red-Eye Flight”, in American Scientist, volume 101, number 1, archived from the original on 05 Mar 2016, pages 47–48
3. Movement in general.
   • The migration of lead from a can to the food inside it can cause lead poisoning.
4. Instance of changing a platform from an environment to another one.
5. The movement of cells in particular directions to specific locations.