Upsilon

noun

/juːpˈsaɪ.lən/

Word Frequency: 0.1

Definitions

1.nounThe twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek.

2.noun(particle physics) An upsilon meson, or bottomonium.

The Daily Word NerdA new word, a puzzle, and a fun fact — free in your inbox every morning.

Free forever · unsubscribe anytime · all 14 newsletters

That email did not go through — please check it and try again.