So there I could formulate ideas (8)
I believe the answer is:
theories
'ideas' is the definition.
(theory is a kind of idea)
'so there i could formulate' is the wordplay.
'so there i' can be anagrammed to 'THEORIES'.
Though, I'm unsure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for theories that I've seen before include "Abstract principles" , "Conjectures" , "Ideas or suppositions" , "Set of principles on which practices are based" , "premises?" .)