noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Any meson, such as an upsilon particle, formed from a bottom quark and its antiquark. particle

Synonyms

All synonyms

bottonium

Etymology

From bottom + -onium.

Related phrases

bottom quarkupsilon particle

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.