Question

What is a tauon or tau?

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Answer 1

elementary particle similar to the electron, with negative electric charge and a spin of 12. 

Answer 2

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.

The name in English is pronounced /taʊ/ or /tɔː/,[1] but in modern Greek it is [taf].[2][3] This is because the pronunciation of the combination of Greek letters αυ has changed from ancient to modern times from one of [au]to either [av] or [af], depending on what follows (see Greek orthography).

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