upsilon

Meaning

1. The twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek.
2. An upsilon meson, or bottomonium.

Synonyms

Y

Y

mu

υ

Pronounced as (IPA)

/juːpˈsaɪ.lən/

Etymology

From Ancient Greek ὖ ψιλόν (û psilón, “simple Υ”).