Virion

The term "Virion" does not denote a sub-cellular compartment. Instead, a virion refers to the complete, extracellular, infectious form of a virus—the particle outside a host cell, composed of viral nucleic acid surrounded by a protein coat (capsid) and often an envelope. It is not a location within a cell (e.g., cytoplasm, nucleus), but rather the infectious particle that moves between cells or hosts. Once a virion enters a host cell, it sheds its outer components and releases its genome into the cellular environment, but the virion itself is defined as the extracellular entity. Thus, "Virion" describes a particle, not a compartment.

(Abstract conclusion: Virion is an extracellular infectious particle, not a sub-cellular compartment.)