What is the definition of word suigenerous?

The word "suigenerous" is not a standard English word. It's likely a misspelling of "sui generis."

Sui generis is a Latin phrase that means "of its own kind; unique". It describes something that is one-of-a-kind, without any comparable examples.

For example, you might say: "The Mona Lisa is a sui generis work of art."

If you meant to use "suigenerous," you may want to double-check the spelling and consider whether "sui generis" is a more appropriate word for the context.