(Greek πλήρωμα) “Fullness,” an ancient Gnostic term adopted to signify the divine world or Universal Soul. Space, developed and divided into a series of aeons. The abode of the invisible Gods. In correspondence to the Kabbalah, Pleroma refers to the World of Atziluth.
"For in him [Christ] dwelleth all the pleroma of the deity bodily." —Col 2:9
"...the Pleroma, the one embracing all within itself, an idea fittingly embodied in a name containing the sum of all its component powers." —The Gnostics and Their Remains, by Charles William King [1887]