PI

/piˈaɪ/

/piˈaɪ/

Definitions of PI

1. noun

   someone who can be employed as a detective to collect information
   synonyms: operative, private detective, private eye, private investigator, shamus, sherlock

   types:

   hotel detective, house detective, house dick

   a private detective employed by a hotel or retail store

   inquiry agent

   a private detective

   store detective

   a private detective employed by a merchant to stop pilferage

   type of:

   detective

   an investigator engaged or employed in obtaining information not easily available to the public
2. noun

   the scientist in charge of an experiment or research project
   synonyms: principal investigator

   type of:

   scientist

   a person with advanced knowledge of one or more sciences
3. noun

   an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs
   synonyms: protease inhibitor

   types:

   Crixivan, indinavir

   a protease inhibitor (trade name Crixivan) used for treating HIV

   Viracept, nelfinavir

   a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugs

   Norvir, ritonavir

   a protease inhibitor (trade name Norvir) used in treating HIV

   Invirase, saquinavir

   a weak protease inhibitor (trade name Invirase) used in treating HIV

   type of:

   antiviral, antiviral agent, antiviral drug

   any drug that destroys viruses