
1. Containing various versions (from manuscripts, earlier editions, etc.) of a text.2. Containing notes and commentaries by various editors and commentators.
Such a book.
Today's word in Visual Thesaurus: http://visualthesaurus.com/?w1=variorum
"A variorum edition would also show us how these elegiac poems, purportedly written on the anniversaries of the birthday of [Ted] Hughes's first wife, Sylvia Plath, were constructed."
John Kinsella; Beguiled by the Wild; The Observer (London, UK); Nov 2, 2003.
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