Definitions by Numerati
Pitriot
A Pi Club member who sides with their fellow geeks to defend π’s supremacy to the nth degree. Some hardcore fellows would even tattoo π on themselves as proof of their undying devotion.
Pi-Dollar Shop
A favorite geek hangout that specializes in pi-themed and pseudo-pi merchandise. Most items cost $3.14 each, with a handful priced at $31.41 or $314.15, and a few special collectibles going for $3,141.59 apiece.
Since Pi-Dollar Shop opened, tens of thousands of math-anxious visitors have left with a more positive view of π and math than when they walked in.
Pi-Dollar Shop by Numerati March 11, 2026
Pi Creep
When envious or less popular mathematical constants keep playing these subliminal messages in their minds: “I want what Pi has!,” “I must have what Pi has!,” and “I need what Pi has!”
Pi as Metaphor
When we apply the properties of π to life—its irrational and unpredictable character, and its intimate yet shallow connections with other constants—we see parallels to how humans conduct themselves toward others, publicly and privately.
Like water applied metaphorically to life, pi as metaphor exposes the constant’s follies and peculiarities vis-à-vis other numbers—keeping her perpetually relevant to mathematicians and educators.
Pi as Metaphor by Numerati January 24, 2026
Pinosticism
Short for “Pi Agnosticism.” The unbelief in the reality of the number π in spite of some suspicions that it may not be nonexistent on this side of eternity or on some other planets or galaxies.
Is pinosticism some mathematical or numerological equivalent of agnosticism among radical members of the mathematical brethren?
Pinosticism by Numerati January 22, 2026