Crossword Genius

Split, one hundred remaining (5)

Ross

I believe the answer is:

cleft

'split' is the definition.
(synonyms)

'one hundred remaining' is the wordplay.
'one hundred' becomes 'c' (roman numeral).
'remaining' becomes 'left' (synonyms).
'c'+'left'='CLEFT'

(Other definitions for cleft that I've seen before include "Chin split" , "Fissure; divided" , "Opening, fissure" , "Split; fissure" , "Partially divided" .)

I've seen this clue in The Times.
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