Pi - definition, pronunciation, transcription

Amer.  |paɪ|  American pronunciation of the word pi
Brit.  |paɪ|  British pronunciation of the word pi


- the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
- someone who can be employed as a detective to collect information (syn: operative)
- the scientist in charge of an experiment or research project
- the 16th letter of the Greek alphabet
- an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs
See also:  WebsterWiktionaryLongman