A field within and around a self-organizing system that organizes its characteristic structure and pattern of activity. According to the hypothesis of formative causation, morphic fields contain an inherent memory transmitted by previous similar systems by morphic resonance and tend to become increasingly habitual. Morphic fields include morphogenetic, behavioral, social, cultural, and mental fields. The greater the degree of similarity, the greater the influence of morphic resonance. In general, systems most closely resemble themselves in the past and are subject to self-resonance from their own past states.
The influence of previous structures on subsequent similar structures of activity organized by morphic fields. According to the hypothesis of formative causation, morphic resonance involves the transmission of formative influences through or across time and space without a decrease due to distance or lapse of time.
The coming into being of form.
Fields that play a causal role in morphogenesis. This term, first proposed in the 1920s, is now widely used by developmental biologists. According to the hypothesis of formative causation, these fields contain an inherent memory, transmitted from similar past organisms by the process of morphic resonance.

From Trialogues at the Edge of the West by Ralph Abraham, Terence McKenna, and Rupert Sheldrake

Also see Rupert Sheldrake Online

Terence McKenna Land
The Deoxyribonucleic Hyperdimension