Crossword Genius

Temperature that may be caught? (4)

Ross

I believe the answer is:

cold

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'temperature' is the definition.
(I know that cold is a type of temperature)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for cold that I've seen before include "Nippy" , "Unfriendly" , "Glacial" , "Unemotional; infection" , "Lacking affection" .)

I've seen this clue in The Mirror and The Daily Express.
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