noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A hypothetical elementary particle of maximum mass in the mass spectrum of elementary particles having mass of 5 × 10²⁸ eV.

Etymology

From maximum + -on.

Related phrases

elementary particlemass spectrum

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