👉 A unmesh is a type of unstructured, non-ordered data structure in computer science. It is a collection of elements that are not ordered or arranged according to any particular order. Unmeshes can be used for storing and managing large amounts of data, but they require special handling due to their lack of ordering. In programming languages such as Python, Java, C++, etc., unmeshes are often represented using lists, which are a type of sequence that does not contain duplicate elements.