toponium en · NOUN
Etymology
Etymology tree English top English onium English -on Proto-Indo-European *-om Proto-Italic *-om Latin -umder. English -ium English -onium English toponium From top + -onium. From top quark and "-onium" as in positronium.
Meanings
- (particle) Any hypothetical meson formed from a top quark and its antiquark; would be very unstable because of the large mass of the top quark
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| toponia | Number=Plur | lexicographic | |
| toponiums | Number=Plur | lexicographic |
Deriveds
Relateds
Translations (2)
ru топо́ний (hypothetical meson) · fr toponium (hypothetical meson)