Toponium
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 Any hypothetical meson formed from a top quark and its antiquark; would be very unstable because of the large mass of the top quark particle
Etymology
From top + -onium. From top quark and "-onium" as in positronium.
Related phrases
More for "toponium"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.