neutronium
Noun
Meaning
(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.
Source: en.wiktionary.orgSynonyms
Antonyms
Examples
In fiction The term "neutronium" has been popular in science fiction since at least the middle of the 20th century.
This term is very rarely used in scientific literature, for three reasons: * There are multiple definitions for the term "neutronium".