Parody about flower company's final omission (7)
I believe the answer is:
apocope
'final omission' is the definition.
(linguistic term)
'parody about flower company's' is the wordplay.
'parody' becomes 'ape'.
'about' means one lot of letters goes inside another.
'flower' becomes 'po' (Po is an example).
'company' becomes 'co' (abbreviation).
'po'+'co'='poco'
'ape' enclosing 'poco' is 'APOCOPE'.
(Other definitions for apocope that I've seen before include "losing letters in the end" , "it may cut down an utterance" .)