Radium discoverer (5)

I think it could be either:

Which length description are you looking for?:

5,5 5*

'radium discoverer' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for curie that I've seen before include "Marie --, French chemist" , "measure of radioactivity" , "Unit of radioactivity" , "One of two Nobel prizewinners" , "Marie --, discoverer of Radium" .)

I've seen this clue in the Newsday and The New York Times.

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