13-Letter Words Containing: VIR

• a group of viruses including those causing mumps and measles

• a group of four men

• Any of the former family Papovaviridae, now split into the Papillomaviridae and Polyomaviridae families, of viruses that cause papillomas or polyomas in animals.

• Any of the family Herpesviridae, double-stranded DNA viruses, many of which are responsible for diseases such as chickenpox, herpes simplex, and shingles, and others affecting animals.

• of or relating to the external conditions or surroundings

• concerned with the ecological effects of altering the environment