migration

migration
1) a directed (not aimless) journey and return occurring regularly in a species, usually at a definite stage in the life cycle, e.g. anadromous, catadromous, diadromous, amphidromous, potamodromous, oceanodromous, all q.v
2) movement of a pathogen in a host body
3) gene flow
4) in flatfishes, the movement of one eye to the other side of the head involving crossing of the optic nerves in the optic chiasma

Dictionary of ichthyology. 2009.

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  • migration — [ migrasjɔ̃ ] n. f. • 1495; lat. migratio 1 ♦ Déplacement de populations qui passent d un pays dans un autre pour s y établir. ⇒ émigration, immigration. Migration provoquée par une guerre. ⇒aussi exode. Migration des barbares. ⇒ invasion. ♢… …   Encyclopédie Universelle

  • Migration — • The movement of populations from place to place Catholic Encyclopedia. Kevin Knight. 2006. Migration     Migration     † …   Catholic encyclopedia

  • Migration — Migration, Migratory behavior, or Migratory may refer Gene migration, a process in evolution and population genetics Animal migration, the travelling of long distances in search of a new habitat Human migration, physical movement by humans from… …   Wikipedia

  • Migration — (von latein. migratio „(Aus )Wanderung, Umzug“) steht für: Migration (Astronomie), eine planetare Bahnänderung eines Planeten während der Entstehung eines Planetensystems um einen Zentralstern Migration (Chemie), das Wandern niedermolekularer… …   Deutsch Wikipedia

  • migration — UK US /maɪˈgreɪʃən/ noun [C or U] ► ECONOMICS the process of a person or people travelling to a new place or country, usually in order to find work and live there temporarily or permanently: »Higher housing prices will probably slow the migration …   Financial and business terms

  • Migration — Mi*gra tion, n. [L. migratio: cf. F. migration.] The act of migrating. [1913 Webster] …   The Collaborative International Dictionary of English

  • migration — (n.) 1610s, of persons, 1640s of animals, from L. migrationem (nom. migratio) a removal, change of abode, migration, noun of action from pp. stem of migrare to move from one place to another, probably originally *migwros, from PIE *meigw (Cf. Gk …   Etymology dictionary

  • migration — migration. См. миграция. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Migration — (lat.), Wanderung (s. d.), besonders der Zugvögel; migrieren, wandern, wandernd umherziehen; migratorisch, wandernd, ziehend …   Meyers Großes Konversations-Lexikon

  • Migration — Migratiōn (lat.), Wanderung; migratōrisch, wandernd; migrieren, wandern, umherziehen …   Kleines Konversations-Lexikon

  • migration — index immigration Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

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