The Lady of Seville is taking off from a certain terminal (6)

I believe the answer is:

anodal

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'the lady of seville is taking off' is the definition.
I can't judge whether this defines the answer.

'a certain terminal' is the wordplay.
'a' becomes 'an'.
'certain terminal' becomes 'odal' (I am not sure about this - if you are sure you should believe this answer much more).
'an'+'odal'='ANODAL'

'from' acts as a link.

Can you help me to learn more?

(Another definition for anodal that I've seen is " with positive potential".)

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