1) The basic viral structure 
<virology> The coat (capsid) of a virus plus the enclosed nucleic acid genome. ... (18 Nov 1997) ... 
(noo″kle-o-kap´sid) a unit of viral structure, consisting of a capsid with the enclosed nucleic acid; it is generally inside the cytoplasm. Nucleocapsid in a schematic diagram of HIV-1.
The coat (capsid) of a virus plus the enclosed nucleic acid genome.
the structure composed of the capsid with the enclosed viral nucleic acid; some nucleocapsids are naked, others are enclosed in an envelope.
Type: Term Pronunciation: nū′klē-ō-kap′sid See: virion
Nucleocapsid: The genome + the protein coat of a virus. The nucleic acid (RNA or DNA) of the virus is its genome. The protein coat is its capsid. See also: Capsid.
nucleocapsid 1. The basic viral structure consisting of a core of nucleic acid surrounded by a protein coat. 2. The genome plus the protein coat of a virus. The nucleic acid (RNA or DNA) of the virus is its genome. The protein coat is its capsid (which is protein coat of a virus).
the nucleic acid core and surrounding capsid of a virus; the basic viral structure.