Acronym commonly referring to Purchasing Managers' Index, an economic indicator, or Project Management Institute. The specific meaning depends on context.
Modern acronym formed from initial letters of constituent words. PMI as Purchasing Managers' Index dates to the 1940s economic analysis, while Project Management Institute was founded in 1969.
PMI demonstrates how acronyms can become so established they're used as words themselves. In economics, PMI readings above 50 indicate expansion, making it a crucial monthly temperature check for manufacturing health.
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