migration

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mi·gra·tion

(mī-grā'shŭn),
1. Passing from one part to another, said of certain morbid processes or symptoms.
2. Synonym(s): diapedesis
3. Movement of a tooth or teeth out of normal position.
4. Movement of molecules during electrophoresis, centrifugation, or diffusion.
[L. migro, pp. -atus, to move from place to place]

migration

Informatics
The process of moving an information system and/or software—including data—from an old to new operational environment in accordance with a software quality system.

Genetics
The movement of one or more individuals between reproductively isolated populations. 

Vox populi
Movement of one or more animals from point A to point B; as in, the migration of birds.

mi·gra·tion

(mī-grā'shŭn)
1. Passage from one part to another, said of certain morbid processes or symptoms.
2. Synonym(s): diapedesis.
3. Movement of a tooth or teeth out of normal position.
4. Movement of molecules during electrophoresis.
5. Geographic spread of disease-causing agents, rectors, or populations.
[L. migro, pp.-atus, to move from place to place]

migration

any cyclical movements (usually annual) that occur during the life history of an animal at definite intervals, and always including a return trip from where they began. The exact derivation of the word is from the Latin ‘migrate’ meaning to go from one place to another, but biologically a return journey is part of the accepted definition of the term, the outward journey being termed EMIGRATION and the inward journey IMMIGRATION.

mi·gra·tion

(mī-grā'shŭn)
1. Movement of a tooth or teeth out of normal position.
2. Passing from one part to another, said of certain morbid processes or symptoms.
[L. migro, pp.-atus, to move from place to place]