A liquid under pressure released through a nozzle as a spray or foam
[DOC] [TLE] Pressurised atomisation of high flashpoint liquids - implications for ... [PAR] the context of area classification can, if released under pressure, ... in the form of 
a flammable mist, spray or foam since it is known that in these forms .... liquid 
flowing under pressure through small orifices to the efficiency of atomisation.