Roman god of heat treatment (6)

I believe the answer is:

vulcan

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'roman god' is the definition.
(Vulcan is an example)

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

(Other definitions for vulcan that I've seen before include "Bomber" , "V-bomber; god" , "with fire power" , "Hot guy" , "Roman smithing god" .)

I've seen this clue in the Evening Standard.

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