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migraine [migraine 词源字典]: migraine: [14] The earliest English forms of this word were mygrame and mygrane, but eventually it became institutionalized as megrim. Not until the 18th century did what is now the standard form, migraine, begin to appear on the scene, probably as a reborrowing of the word’s original source, French migraine. This came via late Latin hēmicrānia from Greek hēmikrāníā, literally ‘half-skull’ (krāníon is the source of English cranium [16], and is distantly related to English horn). The etymological idea underlying the word is of ‘pain in one side of the head’.
=> cranium, horn[migraine etymology, migraine origin, 英语词源]
migrate: migrate: see mutate
emigrant (n.): "one who quits a country or region to settle in another," 1754, from Latin emigrantem (nominative emigrans), present participle of emigrare "move away" (see emigration). As an adjective in English from 1794.
emigrate (v.): 1778, a back-formation from emigration, or else from Latin emigratus, past participle of emigrare "move away." In 19c. U.S., "to remove from one state to another state or territory." Related: Emigrated; emigrating.
emigration (n.): 1640s, from Late Latin emigrationem (nominative emigratio) "removal from a place," noun of action from past participle stem of Latin emigrare "move away, depart from a place," from assimilated form of ex- "out" (see ex-) + migrare "to move" (see migration).
emigre (n.): 1792, from French émigré "an emigrant," noun use of past participle of émigrer "emigrate" (18c.), from Latin emigrare "depart from a place" (see emigration). Originally used of royalist refugees from the French Revolution; extended 1920s to refugees from the Russian Revolution, then generally to political exiles.
ÉMIGRÉS Earned their livelihood by giving guitar lessons and mixing salads.
[Flaubert, "Dictionary of Received Ideas"]
immigrant (n.): "one who immigrates," 1792, in an American context, from French immigrant, from Latin immigrantem (nominative immigrans), present participle of immigrare (see immigrate). Emigrant is older. As an adjective from 1805.
immigrate (v.): 1620s, from Latin immigratum, past participle of imigrare "to remove, go into, move in," from assimilated form of in- "into, in, on, upon" (see in- (2)) + migrare "to move" (see migration). Related: Immigrated; immigrating.
immigration (n.): 1650s, from immigrate + -ion. As short for "immigration authorities," from 1966.
in-migration (n.): 1942, in reference to movement within the same country, from in + migration.
migraine (n.): late 14c., megrim, from Old French migraigne (13c.), from vulgar pronunciation of Late Latin hemicrania "pain in one side of the head, headache," from Greek hemikrania, from hemi- "half" + kranion "skull" (see cranium). The Middle English form was re-spelled 1777 on the French model. Related: Migrainous.
migrant (adj.): 1670s, from Latin migrantem (nominative migrans), present participle of migrare "to remove, depart, to move from one place to another" (see migration).
migrant (n.): "person who migrates," 1760, from migrant (adj.).
migrate (v.): 1690s, from Latin migratus, past participle of migrare "to move from one place to another" (see migration). Related: Migrated; migrating.
migration (n.): 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- (source of Greek ameibein "to change"), from root *mei- (1) "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 ...."
migratory (adj.): 1753, from Latin migrat-, past participle stem of migrare "to movefrom one place to another" (see migration) + -ory.
primigravida: 1879, from earlier use in German, from Modern Latin, from Latin primus "first" (see prime (adj.)) + gravidus "laden, full, swollen, pregnant with child" (see gravid).
transmigration (n.): c. 1300, from Old French transmigracion "exile, diaspora" (13c.) and directly from Late Latin transmigrationem (nominative transmigratio) "change of country," noun of action from past participle stem of Latin transmigrare "to wander, move, to migrate," from trans- "over" (see trans-) + migrare "to migrate" (see migration). Originally literal, in reference to the removal of the Jews into the Babylonian captivity; general sense of "passage from one place to another" is attested from late 14c.; sense of "passage of the soul after death into another body" first recorded 1590s.
transmigrate: "(Of the soul) pass into a different body after death", Late Middle English (as an adjective in the sense 'transferred'): from Latin transmigrat- 'removed from one place to another', from the verb transmigrare (see trans-, migrate).