Spray raised from pedalo, so reacted (7)
I believe the answer is:
aerosol
'spray' is the definition.
(thesaurus)
'raised from pedalo so reacted' is the wordplay.
'raised' shows that the letters should be reversed in order.
'from' indicates the answer is hidden within the clue.
'losorea' can be found hidden inside 'pedalo so reacted'.
'losorea' written backwards gives 'AEROSOL'.
(Other definitions for aerosol that I've seen before include "Spray creator" , "source of graffiti?" , "It dispenses liquid in a fine spray" , "Spray producer" , "Pressurised container releasing fine spray" .)