Meaning of TERNARY in English
noun a ternion; the number three; three things taken together; a triad.
2. ternary ·adj proceeding by threes; consisting of three; as, the ternary number was anciently esteemed a symbol of perfection, and held in great veneration.
3. ternary ·adj containing, or consisting of, three different parts, as elements, atoms, groups, or radicals, which are regarded as having different functions or relations in the molecule; thus, sodic hydroxide, naoh, is a ternary compound.
Webster English vocab. Английский словарь Webster. 2012