"Spatter" refers to small droplets or particles of liquid that spread or scatter in various directions when something is struck or sprayed. Full definition
She began vomiting yellow bile I believe with spatters of blood three days ago. (wagwalking.com)
Education: Most employers of blood spatter analysts, including public and private sector employers require a minimum of Bachelor's degree in forensic sciences or in any of the natural sciences. (jobdescriptionandresumeexamples.com)
Besides prepping it properly (see below), you'll be climbing ladders, getting spattered with paint, and working all day in warm weather. (styleathome.com)