modal adjective mod·al \ˈmō-dəl\

1. of or relating to modality in logic
2. containing provisions as to the mode of procedure or the manner of taking effect —used of a contract or legacy
3. of or relating to a musical mode
4. of or relating to structure as opposed to substance
5. of, relating to, or constituting a grammatical form or category characteristically indicating predication
6. of or relating to a statistical mode