Ternary
As ternary also trinary (consisting of three basic units ', see also lat. Ter = three times' or under Western numerals ) is referred to:
- Biology: trinary nomenclature, method of naming the biological nomenclature
 - Chemistry: Ternary compound, a chemical compound made up of three elements, see Chemical compound # Binary, ternary and quaternary compounds
 - Chemistry: Ternary mixture , a mixture of three substances
 - Logic: the three-valued logic
 - Mathematics: a place value system for base 3, see ternary system
 - Mathematics: Ternary field , algebraic structure, which in synthetic geometry serves as the coordinate range of any affine plane
 - Music: a rhythm based on triplets, see Shuffle
 - ancient metric: a meter consisting of three feet of verse, see tripod
 - Communications engineering : a ternary signal
 - Diagrams: a ternary diagram is a triangle diagram
 - Mechanics / technology: a kit or an assembly with three components or components → See also machine set
 - Materials science: ternary mixture , a mixture of three substances
 - Data processing: ternary computer