Noun
The matter composing the nucleus of a cell; the protoplasm of the nucleus; karyoplasma.
Source: Webster's dictionaryThe genes encoding these r-proteins are transcribed by pol II in the nucleoplasm by a "conventional" pathway of protein synthesis (transcription, pre-mRNA processing, nuclear export of mature mRNA and translation on cytoplasmic ribosomes). Source: Internet
Although little is known about a number of these domains, they are significant in that they show that the nucleoplasm is not a uniform mixture, but rather contains organized functional subdomains. Source: Internet