Adjective
(of quantum coding of information) Having an information density of two classical bits per qubit, made possible by a shared entanglement state between sender and recipient.
(of matter) More dense than ordinary matter.
Source: en.wiktionary.orgVast gravitational pressure compresses atoms so strongly that the electrons are forced to combine with protons via inverse beta-decay, resulting in a superdense conglomeration of neutrons. Source: Internet
The composition of the superdense matter in the core remains uncertain. Source: Internet