variorum
Concise Oxford English Dictionary © 2008 Oxford University Press:
variorum /ˌvɛːrɪˈɔːrəm/
▶adjective (of an edition of an author's works) having notes by various editors or commentators.
■ including variant readings from manuscripts or earlier editions.
▶noun a variorum edition.– origin C18: genitive pl. of varius ‘diverse’, from L. editio cum notis variorum ‘edition with notes by various (commentators)’.
'variorum' also found in these Oxford entries:

