Crossword Genius

Find out about exceptional radiation (5-3)

Ross

I believe the answer is:

infra-red

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

'find out about exceptional' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'about' means one lot of letters goes inside another.
'exceptional' becomes 'rare' (I've seen this before).
'find' with letters rearranged gives 'infd'.
'infd' placed around 'rare' is 'INFRA-RED'.

(Another definition for infra-red that I've seen is " Form of radiation".)

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