Discovery announced by scientist after bathing (6)

I believe the answer is:

eureka

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'discovery' is the definition.
(I have seen 'Brilliant discovery ' mean 'eureka' so perhaps 'discovery' could also mean 'eureka')

I cannot understand how the remainder of the clue works.

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(Other definitions for eureka that I've seen before include ""I've found it!" (Archimedes)" , "Excited cry after a discovery" , "Greek exclamation of discovery (6" , "Archimedes' shout of triumph - re a uke (anag)" , "Discoverer's triumphant cry" .)

I've seen this clue in The Irish Times.

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