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..... in case specialists show signs (8)

Ross

I believe the answer is:

portents

I'm a little stuck... Click here to teach me more about this clue!

'signs' is the definition.
(I know this)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for portents that I've seen before include "Ominous signs" , "Signs of things about to happen" , "Omens" .)

I've seen this clue in the Sydney Morning Herald.
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