| pi | the 16th letter of the Greek alphabet |
|---|---|
| pi | the ratio of the circumference to the diameter of a circle |
| pi | the scientist in charge of an experiment or research project |
| pi | someone who can be employed as a detective to collect information |
| pi | a meson involved in holding the nucleus together |
| pi | perennial herb of East India to Polynesia and Australia cultivated for its large edible root yielding Otaheite arrowroot starch |
| pi | the highly vascular innermost of the 3 meninges |
| pi | French cabaret singer (1915-1963) |
| pi | a cadenced trot executed by the horse in one spot |
| pi | Swiss psychologist remembered for his studies of cognitive development in children (1896-1980) |
| pi | of or relating to or like or in the manner of Jean Piaget |
| pi | performance by or technique of a pianist |