ternääriset

Ternääriset is a Finnish adjective describing things related to three or built from three parts or values. The term is used across disciplines to denote triadic organization, triadic relations, or three-valued properties. It derives from Latin ternarius meaning "three of a kind" and the Finnish suffix -inen, forming a descriptor that is used in the plural form "ternääriset" when referring to multiple items or classes.

In mathematics and logic, ternääriset appears in contexts such as ternary relations, which involve three entities, and ternary operators, which take three operands. In many-valued logics, ternary logic uses three truth values; ternary algebra and three-valued decision procedures are studied in logic and computer science.

In computing and numeral systems, ternääriset can describe base-3 (ternary) representations and ternary computing, which use three digits (0, 1, 2) or balanced ternary (-1, 0, 1). Historical and experimental computers, such as Setun, have explored ternary logic and base-3 computation.

In chemistry, ternääriset yhdisteet are compounds consisting of three different elements in a fixed ratio, for example calcium phosphate Ca3(PO4)2 or aluminum phosphate AlPO4. The term emphasizes tri-element composition rather than stoichiometric specifics.

In linguistics and cognitive science, ternary relations correspond to three-place predicates linking three participants, such as giver–recipient–theme constructions in certain verb frames, or in semantic role labeling where three roles participate.