Ennoblement for the architect? (9)

I believe the answer is:

elevation

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'ennoblement' is the definition.
(thesaurus)

I cannot understand how the remainder of the clue works.

(Other definitions for elevation that I've seen before include "Architectural drawing" , "Diagram" , "Height - promotion" , "Height above a given level" , "Leave it on for altitude of a place" .)

I've seen this clue in The Globe and Mail.

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