Definition of "dodecad"

We have also examined some of the relations between the two dodecads of signs and houses.

1903, H. S. Green, Theoretical Astrology, page 63

Plato at any rate assumed that the number twelve befitted the disembodied gods as a perfect number[...] This dodecad of the disembodied gods has been shown by us to proceed from on high triadically, but multiplied by four [...]

1987, C.R. Long, Twelve gods of Greece and Rome, BRILL, page 117

[...] the lowest pair of transcendent principles, all-begetter Savior and all-begettress Sophia, produced a dodecad of twelve equally paired powers, six male and six female.

2001, John Douglas Turner, Sethian Gnosticism and the Platonic Tradition, Presses Université Laval, page 207

Marcos, according to Irenaeus, also assumed a decad of ten heavenly circles and a dodecad of twelve zodiacal signs. The dodecad represents evil, earthly fate, but the decad is "soul-producing," [...]

1966, Saint Thomas (Aquinas), Spurious and Doubtful Works