New oven made incorporating uranium and gold (7)
I believe the answer is:
nouveau
'new' is the definition.
(I've seen this before)
'oven made incorporating uranium and gold' is the wordplay.
'made' indicates anagramming the letters.
'incorporating' indicates putting letters inside.
'uranium' becomes 'U' (U is the chemical symbol for uranium).
'and' says to put letters next to each other.
'gold' becomes 'au' (Au is the chemical symbol for gold).
'oven' anagrammed gives 'nove'.
'nove' going around 'u' is 'nouve'.
'nouve'+'au'='NOUVEAU'
(Other definitions for nouveau that I've seen before include "latest" , "New to the French" , "like young Beaujolais" , "It's new in France" , "A recently rich person, . . . . . . . riche" .)