Word of the day: dyadic

The word of the day is dyadic:

1. of or consisting of a dyad; being a group of two.
2. pertaining to the number 2.

(http://dictionary.reference.com/browse/dyadic)

"Similarly, Urton told me, binary oppositions were a hallmark of the region's peoples, who lived in societies 'typified to an extraordinary degree by dual organization,' from the division of town populations into complementary 'upper' and 'lower' halves (moieties, in the jargon) to the arrangement of poetry into dyadic units."

 - Charles Mann, 1491: New Revelations of the Americas Before Columbus