Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun pi

5 senses of pi

Sense 1
pi -- (the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...)
       => transcendental number -- (an irrational number that is not algebraic)

Sense 2
private detective, PI, private eye, private investigator, operative, shamus, sherlock -- (someone who can be employed as a detective to collect information)
       => detective -- (an investigator engaged or employed in obtaining information not easily available to the public)

Sense 3
principal investigator, PI -- (the scientist in charge of an experiment or research project)
       => scientist -- (a person with advanced knowledge of one or more sciences)

Sense 4
pi -- (the 16th letter of the Greek alphabet)
       => letter, letter of the alphabet, alphabetic character -- (the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters")

Sense 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)
       => antiviral, antiviral agent, antiviral drug -- (any drug that destroys viruses)