Crossword Genius

To some extent, resemble mathematical symbol (6)

Ross

I believe the answer is:

emblem

'symbol' is the definition.
(I've seen this before)

'to some extent resemble mathematical' is the wordplay.
'to some extent' indicates a hidden word.
'EMBLEM' is hidden within 'resemble mathematical'.

(Other definitions for emblem that I've seen before include "Symbol; heraldic device" , "Badge, token" , "Crest or insignia" , "Crest or symbol" , "Representative object" .)

I've seen this clue in The Guardian.
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