Dianic is a term from Margaret Murray's book The Witch-Cult in Western Europe, which is a poorly run, outdated, sociological study, but the fact that the book sucks when viewed with an modern eye means nothing because people rarely use the term the way Murray did: To mean "of the cult of the god dianus."
Today, Dianic Paganism refers to a number of Pagan practice that are woman-centered and focused on worship of/relationship with The Goddess. Often this goddess is defined in various ways by the Dianic group: As an all-mother, or as a singular power deity that is female.
In Dianic Wicca, the deities are STILL seen as both male and female, but the male deity is paid less attention to, or even ignored altogether.
A third branch of Dianic Paganism claims that there is no polarity and that the goddess is both male and female, but many are unsatisfied by this point of view, comparing it to the Christian insistance that "Our Father who art in heaven" is actually not male.
