Tau vs. Pau — What's the Difference?

Tau (uppercase Τ, lowercase τ; Greek: ταυ [taf]) is the 19th letter of the Greek alphabet. In the system of Greek numerals it has a value of 300.

All done or gone; finished

The 19th letter of the Greek alphabet. See Table at alphabet.

(Hawaii) done; over; finished

The letter Τ/τ in the Greek, Hebrew, and ancient Semitic alphabets; being the nineteenth letter of the Classical and Modern Greek, and the twenty-first letter of the Old and Ancient Greek alphabets.

Baozi; Chinese steamed buns with filling

A Τ-shaped object or sign; a Saint Anthony's cross, sometimes regarded as a sacred symbol.

See Pah.

(Christianity) A crosier with a Τ-shaped head.

The ankh symbol (☥).

(astronomy) Chiefly written τ: used to designate the nineteenth star (usually according to brightness) in a constellation.

(finance) A measurement of the sensitivity of the value of an option to changes in the implied volatility of the price of the underlying asset.

Chiefly written τ: an irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its radius, equal to twice the value of pi (2π; approximately 6.2831853071).

(neurology) Parkinson's diseases]]

(particle) Chiefly written τ.

Or tau particle (“an unstable elementary particle which is a type of lepton, having a mass almost twice that of a proton, a negative charge, and a spin of ½; it decays into hadrons (usually pions) or other leptons, and neutrinos; a tauon”).

(historical) nodot=1, now known as a kaon.

The nineteenth letter (

The common American toadfish; - so called from a marking resembling the Greek letter tau (

The 19th letter of the Greek alphabet