| viability | capability of living. |
| viable | alive; capable of living. |
| viral | referring to submicroscopic obligate parasites consisting of infectious nucleic acid usually surrounded by a protein coat. |
| virus | a submicroscopic obligate parasite consisting of infectious nucleic acid usually surrounded by a protein coat. |
| viruses | submicroscopic obligate parasites consisting of infectious nucleic acid usually surrounded by a protein coat. |
