Amazing article concludes radical publication (8)
I believe the answer is:
magazine
'publication' is the definition.
(I know that glossy is a type of publication)
'amazing article concludes radical' is the wordplay.
I cannot really understand how this works, but
an anagram of 'amazing' is 'magazin' which is within the answer.
A single letter 'e' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for magazine that I've seen before include "Weapons' store" , "Arms store or periodic publication" , "Periodical in arms depot" , "Glossy publication?" , "Arsenal" .)