1. To strew, distribute, or disperse things all around (some place), especially in a haphazard or aimless manner. A noun or pronoun can be used between "scatter" and "around." I leaped into the pile of leaves and scattered them around. The cat jumped onto my desk and scattered around all my important documents. I scattered my grandmother's ashes around the field, as she instructed in her will.
2. To separate and distribute rays of light in many different directions. A noun or pronoun can be used between "scatter" and "around." The crystal scatters the sunlight around in a myriad of colors. The gems in the cave scattered around the light from the flashlight.