👉 The term "undiffusible" is a science fiction concept used in popular culture. It refers to an object that can be broken down into its constituent parts without any change in their properties or characteristics, such as sound or light. In the context of science fiction, this could mean something like a car that can be made to break apart and rearrange itself back together, just by being put through various motions or mechanical processes. For example, it might be possible for a car to break down