WPI

WPI is the abbreviation of:

Short use of DWPI (Derwent World Patents Index)
Whey protein isolate, a dietary supplement created by filtering milk protein
Whittemore Peterson Institute, performs research into chronic fatigue syndrome
Wholesale price index, the price of a representative basket of wholesale goods
Worcester Polytechnic Institute, a private research university in Worcester, Massachusetts, US
Work Personality Index
Worker-Communist Party of Iran, a political party
Whang's Personal Identity, a psychological assessment tool
Wraps per inch, a measure of thickness of yarn

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