G'day Troll & GUEST,JTT,

The problem (in respect of a living language) of the full-blown OED is that it is glacial. It is an indispensable reference for the history of a word ... but is decades behind the language. My current Oxfords (The Australian Concise Oxford Dictionary ... 1992 editon at work and [~] 1996 at home) both give virus as both the singular and plural forms.

The language has done a lot of talking about virus(es) in respect of computers and current usage has shifted ... and is still shifting (and I admit that I would still use use "viruses" as the plural form).

Regards,

Bob Bolton