upsilon

(redirected from upsilon particle)
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Υ

1. Upsilon, 20th letter of the Greek alphabet.
2. Symbol for kinematic viscosity.

up·si·lon

(up'si-lon),
The 20th letter of the Greek alphabet, Ψ.

upsilon

[yoo͡p′silon, up′-]
Υ, υ, the twentieth letter of the Greek alphabet.

υ

Abbreviation for upsilon; pseudouridine.

up·si·lon

(υ) (ŭp'si-lon)
1. The 20th letter in the Greek alphabet.
2. Symbol for kinematic viscosity