Definition of "diskzine"

It will be interesting to watch this diskzine over the next couple of years […]

1984, Dr. Dobb's Journal of Software Tools for the Professional Programmer

A hacker starts with nothing but a dream and a floppy disk and presently finds himself in a business that's doubled and trebled. Three "diskzines" — magazines on floppy disks — started cheaply by entrepreneurs who placed ads in obscure computer journals […]

1984, Venture (volume 6, part 1, page 142)