1. A process or method of harming or causing others to be harmed or killed by throwing stones at them: One method that people have used for executing other people in the past for criminal acts is lapidification.
2. Petrification or fossilization: The lapidification of plants or animals from earlier times means that they have been changed into stone, which indicates that water containing mineral particles have infiltrated into the mass and the shape of the vegetation or creature didn't change.