Synonyms for pi

• (noun) transcendental number
  
  
• (noun) private detective, PI, private eye, private investigator, operative, shamus, sherlock, detective
  
  
• (noun) principal investigator, PI, scientist, man of science
  
  
• (noun) letter, letter of the alphabet, alphabetic character
  
  
• (noun) protease inhibitor, PI, antiviral, antiviral agent, antiviral drug
  
  

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