Acronym for various organizations, most commonly MCI Communications (former telecommunications company) or Mild Cognitive Impairment in medical contexts.
Modern acronym formation from the 20th century. MCI Communications stood for Microwave Communications Inc., founded in 1963, later becoming a major telecom competitor to AT&T.
MCI Communications revolutionized the telecom industry by challenging AT&T's monopoly in the 1970s-80s with their 'Friends and Family' calling plans. The company's legal battles helped break up the Bell System and create modern competitive telecommunications.
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