The word "probabilistic" refers to something that involves or is related to probabilities or chances. It suggests that there is uncertainty and that something can happen with different likelihoods. Full definition
Learning Probabilistic Models of Hydrogen Bond Stability from Molecular Dynamics Simulation Trajectories (scirp.org)
Air carriers are more and more interested in probabilistic forecasts for optimizing decision making. (esrl.noaa.gov)
The last point emphasizes the need for further development and analysis of probabilistic forecast ranges and measures of uncertainty, critical to future efforts. (searcharcticscience.org)