Is there a way to update the virus definition of a device without any internet connection. For example, to download the virus definition file on to a folder, then transfer to android devices and finally update the virus definition?
No that is not possible with any Home/Consumer software.
Which is the Business product that has this capability?
To be honest I'm not sure. I would ask here:
I think you'll find that feature restricted to Enterprise machines running Endpoint Protection in Windows, but no harm in asking.