Island with revolutionary name impervious to external influence? (8)
I believe the answer is:
hermetic
'impervious to external influence?' is the definition.
I can't tell whether this definition defines the answer.
'island with revolutionary name' is the wordplay.
'island with' becomes 'herm' (I can't justify this - if you can you should give a lot more credence to this answer).
'revolutionary' says the letters should be written backwards.
'name' becomes 'cite' (I've seen this in other clues).
'cite' written backwards gives 'etic'.
'herm'+'etic'='HERMETIC'
Can you help me to learn more?
(Other definitions for hermetic that I've seen before include "Sealed so as to be airtight" , "Completely sealed" .)