Strictly speaking (disks), yes, but people often say "disk" and format partitions instead. As the partition table and the MBR/"EFI system partition" exist outs

Strictly speaking (disks), yes, but people often say "disk" and format partitions instead. As the partition table and the MBR/"EFI system partition" exist outside of the realm of normal partitions, formatting normal partitions doesn't help in this case.