|1.||consisting of three or groups of three|
|a. (of a number system) to the base three|
|b. involving or containing three variables|
|3.||(of an alloy, mixture, or chemical compound) having three different components or composed of three different elements|
|—n , -ries|
|4.||a group of three|
|[C14: from Latin ternārius, from ternī three each]|
ternary ter·na·ry (tûr'nə-rē)
Composed of three or arranged in threes, as a chemical compound containing three elements. n.
A group of three.