Warplane once deployed uranium-enriched device causing great damage (7,6)

I believe the answer is:

nuclear weapon

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'device causing great damage' is the definition.
I can't tell whether this definition defines the answer.

'warplane once deployed uranium-enriched' is the wordplay.
'deployed' is an anagram indicator.
'uranium' becomes 'U' (U is the chemical symbol for uranium).
'enriched' means one lot of letters goes inside another.
'warplane'+'once'='warplaneonce'
'warplaneonce' is an anagram of 'nclearweapon'.
'nclearweapon' going around 'u' is 'NUCLEAR WEAPON'.

Can you help me to learn more?

(Other definitions for nuclear weapon that I've seen before include "Fission bomb" , "Atomic bomb" .)

I've seen this clue in The Times.

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