Definitions for



Overview of noun pi

The noun pi has 5 senses? (no senses from tagged texts)
1. pi

(the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...)

2. private detective, PI, private eye, private investigator, operative, shamus, sherlock

(someone who can be employed as a detective to collect information)

3. principal investigator, PI

(the scientist in charge of an experiment or research project)

4. pi

(the 16th letter of the Greek alphabet)

5. protease inhibitor, PI

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

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