Give out formulae devised and gone over internally (4)
I believe the answer is:
deal
'give out' is the definition.
(thesaurus)
'formulae devised and gone over internally' is the wordplay.
'internally' indicates the answer is hidden within the clue.
'gone over' shows that the letters should be reversed in order.
'laed' is hidden in the letters of 'formulae devised and'.
'laed' back-to-front is 'DEAL'.
(Other definitions for deal that I've seen before include "Agreement; hand out cards" , "Act of business" , "Hand out playing cards" , "Plank of softwood timber" , "Pass around (e.g. cards)" .)