Crossword Genius

Converted highest fractions (7)

Ross

I believe the answer is:

eighths

'fractions' is the definition.
(eighth is a kind of fraction)

'converted highest' is the wordplay.
'converted' indicates an anagram.
'highest' anagrammed gives 'EIGHTHS'.

(Other definitions for eighths that I've seen before include "Fractions of 12? per cent" , "Parts of division" , "Half quarters" .)

I've seen this clue in The Telegraph.
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