diadic

Adjective

dyadic (comparative more dyadic, superlative most dyadic)

1. having an arity of two (taking two arguments or operands)
   • Up to now, all the expressions we have called predicates have stood for properties which it makes sense to attribute to a single individual. Such predicates are known as monadic, or one-place, predicates. There are, however, many expressions which we cannot meaningfully apply to single objects, but...1965 G. E. Hughes and D. G. Londey: The Elements of Formal Logic p.270

   Synonyms:

   binary

2. (obsolete) binary
   • The dyadic arithmetic proposes to express all numbers by two characters, 1 and 0. The value of 1 is to double at every remove into a preceding column. Thus, 1 is represented by 1, 2 by 10, 4 by 100, and 8 by 1000; 3 is represented by 11, 5 by 101, 6 by 110, 7 by 111, 9 by 1001, and 10 by 1010. Thus...1800 Extracts from the Port-folio of a Man of Letters. The Monthly Magazine and British Register Volume X page 34
3. Pertaining to the physical sex of a person who is exactly male or female in genetics, anatomy and hormone levels; not intersex.
   • Although dyadic bodies may be more common, they are no more or less "normal" than intersex bodies.2019, Katie Steele, Julie Nicholson, Radically Listening to Transgender Children, Lexington Books

   Synonyms:

   endosex, perisex

See all 4 meanings of dyadic