Latin phrase meaning "of its own kind"; in a class by itself; unique
Sui generis is a Latin phrase that means "of its/their own kind" or "in a class by itself", therefore "unique". It denotes an exclusion to the larger system an object is in relation to.
Several disciplines use the term to refer to unique entities. These include:
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).