That thunderous deity (4)

I believe the answer is:

thor

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'deity' is the definition.
(Thor is an example)

I don't understand how the rest of the clue works.

(Other definitions for thor that I've seen before include "Thursday is named after this Scandinavian god" , "Germanic deity" , "Scandinavian god of thunder and the weather" , "Son of Odin and Freya" , "Wielder of hammer" .)

I've seen this clue in the Evening Standard.

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