The Article presents - for the first time in Poland - an official terminology used in Bloodstain Pattern Analysis (BPA) by the international community of experts. The Author explains why that terminology (and its new Polish equivalent that he designed) is more precise and relevant than the previous attempts. The main objective of the unified new terminology is to adjust, uniform and universalize the BPA vocabulary used by the worldwide Law Enforcement Agencies and Criminal Justice System. The effects of such
work would enable the consistent and coherent exchange of information and expertise within the cross-border cooperation of BPA specialists.