duad

American  

[doo-ad, dyoo-] / ˈdu æd, ˈdyu- /

noun

1. a group of two; couple; pair.

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duad British  

/ ˈdjuːæd /

noun

1. a rare word for pair 1

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Etymology

Origin of duad

1650–60; < Latin duo two + -ad ¹

Example Sentences

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 Occult Chemistry Clairvoyant Observations on the Chemical Elements by Sinnett, A. P.

Niobium only differs from yttrium by the introduction of triplets for duads in e; on the meta level we have therefore triplets, and on the hyper each triplet yields a duad and a unit.

From Occult Chemistry Clairvoyant Observations on the Chemical Elements by Sinnett, A. P.

A consists of two square-based pyramids turned so as to meet at their apices, and breaks up into two quartet rings and a duad.

From Occult Chemistry Clairvoyant Observations on the Chemical Elements by Sinnett, A. P.

It would be interesting to know why this duad remains as a duad in selenium and breaks up into a septad and triad in the other members of the group.

From Occult Chemistry Clairvoyant Observations on the Chemical Elements by Sinnett, A. P.

That from the monad and the indefinite duad proceed numbers.

From A History of Science — Volume 1 by Williams, Edward Huntington