PI
— Noun
– English
~ an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs
pi
— Noun
– English
~ the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
pi-meson
— Noun
– English
~ a meson involved in holding the nucleus together; produced as the result of high-energy particle collision
PI
— Noun
– English
~ the scientist in charge of an experiment or research project
pi
— Noun
– English
~ the 16th letter of the Greek alphabet