The Clue
Parts of geometry calculations (3 letter answer)
The Answer
PIS
Tags
Notes
The answer PIS is uncommon, appearing about once every 375 puzzles.
Related Clues
Rho preceders
Dicks
Gumshoes
Jumbles
Pastries?
Tecs
Circle constants
Circle ratios
Detectives, for short
Fraternity letters
Geometry symbols
Greek consonants
Greek letters
Math ratios
Mathematical constants
Ratio symbols
___-aller (last resort)
Circumference-figuring figures
Magnum and others: Abbr.
Magnum and others, for short
Some tails, for short
TV's Magnum and the like
TV's Magnum and others
Greek letters before rhos
Letters on some college buildings
Symbols used in angle measurement
Definition
PI as a noun:
1. 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. 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