# topness

> English word · Noun

## Definitions
1. A quantum number of quarks and hadrons, determined by the number(s) of top quarks and antiquarks present. Symbol T.

## Etymology
From top + -ness.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/topness