Etymology
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renewal (n.)

"act of renewing or forming anew," 1680s, from renew (v.) + -al (2). Specific meaning "urban redevelopment" is attested by 1965, American English. An earlier noun was simply renew (early 15c., reneue).

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urban (adj.)

"characteristic of city life, pertaining to cities or towns," 1610s (but rare before 1830s), from Latin urbanus "of or pertaining to a city or city life; in Rome," also "in city fashion, polished, refined, cultivated, courteous," but also sometimes "witty, facetious, bold, impudent;" as a noun, "city dweller," from urbs (genitive urbis) "city, walled town," a word of unknown origin.

The word gradually emerged in this sense as urbane became restricted to manners and styles of expression. In late 20c. American English gradually acquiring a suggestion of "African-American." Urban renewal, euphemistic for "slum clearance," is attested from 1955, American English. Urban sprawl recorded by 1958. Urban legend attested by 1980.

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Urban 

masc. proper name, from Latin urbanus "refined, courteous," literally "of a city" (see urban (adj.)).

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relocation (n.)

1746, in Scottish law, "renewal of a lease," noun of action from relocate (v.). The meaning "act of relocating" is from 1837.

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instauration (n.)

"restoration, renewal," c. 1600, from Latin instaurationem (nominative instauratio) "a renewal," noun of action from past participle stem of instaurare "to set up, establish; renew, restore," from in- "in" (from PIE root *en "in") + -staurare (ending also found in restaurant), from PIE *stauro-, from root *sta- "to stand, make or be firm."

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exurb (n.)

"the outer, prosperous ring of the suburbs," 1955, American English, from exurban (adj.), by 1838 (it seems to have arisen in the writings of the reform movement opposed to urban cemeteries), from ex- + urban, on model of suburban. Related: Exurbanite; exurbia.

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conurbation (n.)

1915, from con-, assimilated form of Latin com "with, together" (see com-) + urbs "city" (see urban (adj.)) + noun ending -ation. Coined by Scottish biologist and urban planner Patrick Geddes in "Cities in Evolution."

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interurban (adj.)

1883, from inter- "between" + Latin urbs "city" (see urban (adj.)).

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