Relating to or arising from many foci.
* * *
mul·ti·fo·cal .məl-ti-'fō-kəl adj
1) having more than one focal length <\multifocal lenses>
2) arising from or occurring in more than one focus or location <\multifocal seizures>
* * *
mul·ti·fo·cal (mul″te-foґkəl) arising from or pertaining to many foci.Medical dictionary. 2011.