单词 | migration |
释义 | migration[ mahy-grey-shuhn ] / maɪˈgreɪ ʃən / SEE SYNONYMS FOR migration ON THESAURUS.COM nounthe process or act of migrating. a migratory movement: preparations for the migration. a number or body of persons or animals migrating together. Chemistry. a movement or change of position of atoms within a molecule. Physics. diffusion (def. 3a). Origin of migrationFirst recorded in 1605–15, migration is from the Latin word migrātīon- (stem of migrātiō). See migrate, -ion OTHER WORDS FROM migrationmi·gra·tion·al, adjectivenon·mi·gra·tion, nounpre·mi·gra·tion, adjectivere·mi·gra·tion, nounWords nearby migrationmignonne, migraine, migrant, migrate, migrating abscess, migration, migration inhibition test, migratory, migratory locust, miguelet, MIG welding Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for migrationBritish Dictionary definitions for migrationmigration / (maɪˈɡreɪʃən) / nounthe act or an instance of migrating a group of people, birds, etc, migrating in a body chem a movement of atoms, ions, or molecules, such as the motion of ions in solution under the influence of electric fields Derived forms of migrationmigrational, adjectiveCollins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for migrationmigration [ mī-grā′shən ] n.The moving from place to place, as of disease symptoms. diapedesis The movement of a tooth or teeth out of normal position. The movement of one or more atoms from one position to another within a molecule. The movement of ions between electrodes during electrolysis. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for migrationmigration [ mī-grā′shən ] The seasonal movement of a complete population of animals from one area to another. Migration is usually a response to changes in temperature, food supply, or the amount of daylight, and is often undertaken for the purpose of breeding. Mammals, insects, fish, and birds all migrate. The precise mechanism of navigation during migration is not fully understood, although for birds it is believed that sharp eyesight, sensibility to the Earth's magnetic field, and the positions of the Sun and other stars may play a role. The movement of one atom or more, or of a double bond, from one position to another within a molecule. The movement of ions between electrodes during electrolysis. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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