Definition: The term "aclastic" means inanimate, nonliving, or unanimated. The word is derived from Latin ac- meaning "to be" and latice meaning "to make" or "to bring to." In other words, "aclastic" refers to a substance that is not animated, alive, or capable of life itself. It can also refer to an inanimate object like an instrument or machinery that does not have any motion or movement.