On Wed, 2004-08-18 at 11:08, Steven W. Orr wrote: > Maybe not you, maybe Andrew :-) > It's not from a Latin word, so the plural can not be viri. > It's not always a mass noun . It is from a Latin word. At least Miriam Webster et al. think so: http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=virus It could be viri for the plural, if it were a second declension masculine noun. Latin already has vir->viri, so it's plural would probably not be viri. I was stating that there was no plural for virus in Latin--at least no plural of which we have record. Forrest