Rare volume has Newton in translation (9)
I believe the answer is:
rendition
'translation' is the definition.
(I've seen this in another clue)
'rare volume has newton' is the wordplay.
'rare' becomes 'r' (listed by Oxford Dictionary of Abbreviations).
'volume' becomes 'edition' (edition can mean a volume or issue).
'has' means one lot of letters goes inside another.
'newton' becomes 'N' (symbol for the scientific unit of force).
'edition' enclosing 'n' is 'endition'.
'r'+'endition'='RENDITION'
'in' acts as a link.
(Other definitions for rendition that I've seen before include "Performance; translation" , "covert if extraordinary" , "Interpretation (of e.g. song)" , "(Musical) performance" , "that may be extraordinary" .)