Very involved in new canned meat promotion (11)
I believe the answer is:
advancement
'promotion' is the definition.
('advancement' can be a synonym of 'promotion')
'very involved in new canned meat' is the wordplay.
'very' becomes 'v' (abbreviation).
'involved in' means one lot of letters goes inside another.
'new' indicates an anagram.
'canned'+'meat'='cannedmeat'
'cannedmeat' with letters rearranged gives 'adancement'.
'v' put inside 'adancement' is 'ADVANCEMENT'.
(Other definitions for advancement that I've seen before include "Process of developing" , "getting on" , "Promotion in rank" , "making progress" , "headway" .)