To be sure, Zola shivered in a measure of cold (8,4)

I believe the answer is:

absolute zero

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'cold' is the definition.
(thesaurus)

'to be sure zola shivered in a measure' is the wordplay.
'to be sure zola' anagrams to 'ABSOLUTE ZERO'.
But, I am unsure how this is indicated.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for absolute zero that I've seen before include "OK?" , "Coldest temperature" , "can't get lower than this" , "Minus 273 1/4 C approx." , "Lowest theoretical temperature" .)

I've seen this clue in The Guardian.

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