neutronium
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English
Etymology
From neutron + -ium. Coined by scientist Andreas von Antropoff in 1926 (before the discovery of the neutron in 1931; neutrons had been predicted to exist in 1920).
Pronunciation
- enPR: no͞o-trōʹnē-əm
Noun
neutronium (uncountable)
- (physics) A material composed entirely of neutrons.
- (physics) A hypothetical gravitationally bound system of a neutron and an antineutron (the onium of a neutron), not predicted to exist under normal circumstances.
Synonyms
- Sense 1:
- Sense 2:
- neutron-antineutron system
- true neutronium
- Symbols:
- nn
Antonyms
Hypernyms
- Sense 1:
- Sense 2:
Hyponyms
- dineutron
- mononeutrium
- mononeutron
- mononeutronium
- mononilium
- neutron
- polyneutrium
- polyneutron
- polyneutronium
- polynilium
- tetraneutron
- trineutron
Coordinate terms
Translations
neutron star material
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