From the monad proceeds an indefinite duad, which is subordinate to the monad as to its cause.    From Wordnik.com.  [A History of Science: in Five Volumes. Volume I: The Beginnings of Science] Reference

A figure used by Pythagoras, consisting of ten points, arranged in a triangular form so as to represent the monad, duad, triad, and quarterniad.    From Wordnik.com.  [The Symbolism of Freemasonry] Reference

Soul in progress changes from monad to duad; results, 438-m.    From Wordnik.com.  [Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry] Reference

That from the monad and the indefinite duad proceed numbers.    From Wordnik.com.  [A History of Science: in Five Volumes. Volume I: The Beginnings of Science] Reference

They yield, on the hyper level, two triads, a duad, and a unit.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

The duad represented the line, as being bounded by two points or monads.    From Wordnik.com.  [Notes and Queries, Number 77, April 19, 1851 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc] Reference

The pillars are the same as in chlorine and its congeners, with a duad added at the base.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

It is possible to think of the soul as a reincarnating entity, whether it be a monad, duad, triad, or septenary being.    From Wordnik.com.  [Reincarnation and the Law of Karma A Study of the Old-New World-Doctrine of Rebirth, and Spiritual Cause and Effect] Reference

Apart from this, the composition is simple enough, all the ovoids being alike, and composed of a triplet, a septet and a duad.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

Corrections made to printed original. page 300, "The duad represented the line" - original reads 'decad', making no sense in view of what follows.    From Wordnik.com.  [Notes and Queries, Number 77, April 19, 1851 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc] Reference

The sphere with its two contained bodies breaks up into eight triangles on the meta level, and each of these, on the hyper, into a duad and a unit.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

The contained bodies in the pillars run three, four, five, four, three, two, instead of starting with two; and a quartet replaces a duad in the globes above.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

The bodies in the funnels resemble those in magnesium, but a reversed image of the top one is interposed between itself and the small duad, and each pair has its own enclosure.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

The second set of bodies divide on the meta level, forming a sextet and a cross with a duad at each arm; these on the hyper level divide into two triangles, four duads and a unit.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

Galaxy unite, loses its spherical shape, the shape of all Divine Nature, and is lengthened into a cone, as a point is lengthened into a line; and then, an indivisible monad before, it divides itself and becomes a duad -- that is, unity becomes division, disturbance, and conflict.    From Wordnik.com.  [Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry] Reference

A unit; the duad becomes two units; and the septet a triplet and a quartet.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

“bound,” they have invented idols, a manifest advance toward that polytheism and pantheism which lead through a triad and duad of deities to monotheism, the finial of the spiritual edifice.    From Wordnik.com.  [Two Trips to Gorilla Land and the Cataracts of the Congo] Reference

On the hyper level the triplet becomes a duad and.    From Wordnik.com.  [Occult Chemistry Clairvoyant Observations on the Chemical Elements] Reference

"First duad!.    From Wordnik.com.  [The Magi'i Of Cyador]

"Second duad!".    From Wordnik.com.  [The Magi'i Of Cyador]

As the number 12 includes the sacred numbers, 3, 5, 7, and 3 times 3, or 9, and is produced by adding the sacred number 3 to 9; while its own two figures 1, 2, the unit or monad, and duad, added together, make the same sacred number 3; it was called the perfect number; and the cube became the symbol of perfection.    From Wordnik.com.  [Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry] Reference