Definition of Pi

Noun: pi (pies)  pI

  1. The ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
     
  2. The 16th letter of the Greek alphabet
Noun: PI
  1. An antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs
    - protease inhibitor
     
  2. The scientist in charge of an experiment or research project
    - principal investigator
     
  3. Someone who can be employed as a detective to collect information
    - private detective, private eye, private investigator, operative, shamus, sherlock

See also:
phytotrons
pia

Anagrams containing the word pi

pi ip