Extremists in Tory pressure group get ready to print (7)
I believe the answer is:
typeset
'print' is the definition.
(typesetting is a kind of printing)
'extremists in tory pressure group get ready' is the wordplay.
'extremists in' says to hollow out the word (remove centre letters).
'pressure group' becomes 'pe' (I am not sure about this - if you are sure you should believe this answer much more).
'get ready' becomes 'set' (synonyms).
'tory' with its centre removed is 'ty'.
'ty'+'pe'+'set'='TYPESET'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for typeset that I've seen before include "Ready to go public" , "Prepare (text) for printing" , "Like" , "characters lined up ready for a run-off?" , "compositor" .)