Definitions
1.AdjectivePertaining to a dyad, the number two; of two parts or elements.
having an arity of two (taking two arguments or operands)
binary
2.Adjectivehaving an arity of two (taking two arguments or operands)
3.Adjectivebinary
4.AdjectivePertaining to the physical sex of a person who is exactly male or female in genetics, anatomy and hormone levels; not intersex.
5.NounThe sum of two or more dyads