[mahy-grey-shuh n] /maɪˈgreɪ ʃən/
the process or act of .
a migratory movement:
preparations for the migration.
a number or body of persons or animals together.
Chemistry. a movement or change of position of atoms within a molecule.
Physics. (def 3a).
the 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
1610s, of persons, 1640s of animals, from Latin migrationem (nominative migratio) “a removal, change of abode, migration,” noun of action from past participle stem of migrare “to move from one place to another,” probably originally *migwros, from PIE *meigw- (cf. Greek ameibein “to change”), from root *mei- “to change, go, move” (see mutable). Related: Migrational.
That European birds migrate across the seas or to Asia was understood in the Middle Ages, but subsequently forgotten. Dr. Johnson held that swallows slept all winter in the beds of rivers, while the naturalist Morton (1703) stated that they migrated to the moon. As late as 1837 the “Kendal Mercury” “detailed the circumstance of a person having observed several Swallows emerging from Grasmere Lake, in the spring of that year, in the form of ‘bell-shaped bubbles,’ from each of which a Swallow burst forth ….”
migration mi·gra·tion (mī-grā’shən)
[mil-i-tuh nt] /ˈmɪl ɪ tənt/ adjective 1. vigorously active and aggressive, especially in support of a cause: militant reformers. 2. engaged in warfare; fighting. noun 3. a militant person. 4. a person engaged in warfare or combat. /ˈmɪlɪtənt/ adjective 1. aggressive or vigorous, esp in the support of a cause: a militant protest 2. warring; […]
[mil-i-ter-ee] /ˈmɪl ɪˌtɛr i/ adjective 1. of, for, or pertaining to the army or armed forces, often as distinguished from the navy: from civilian to military life. 2. of, for, or pertaining to war: military preparedness. 3. of or relating to soldiers. 4. befitting, characteristic of, or noting a soldier: a military bearing. 5. following […]
[mi-met-ik, mahy-] /mɪˈmɛt ɪk, maɪ-/ adjective 1. characterized by, exhibiting, or of the nature of imitation or mimicry: mimetic gestures. 2. mimic or make-believe. /mɪˈmɛtɪk/ adjective 1. of, resembling, or relating to mimesis or imitation, as in art, etc 2. (biology) of or exhibiting mimicry adj. 1630s, “having an aptitude for mimicry,” from Greek mimetikos […]
[min-er-uh l, min-ruh l] /ˈmɪn ər əl, ˈmɪn rəl/ noun 1. any of a class of substances occurring in nature, usually comprising inorganic substances, as quartz or feldspar, of definite chemical composition and usually of definite crystal structure, but sometimes also including rocks formed by these substances as well as certain natural products of organic […]