Pindar employed the triadic structure attributed to Stesichorus (7th and 6th centuries bc), consisting of a strophe (two or more lines repeated as a unit) followed by a metrically harmonious antistrophe, concluding with a summary line (called an epode) in a different metre.
Ellington's harmonic lessons were finally beginning to be appreciated as arrangers forged beyond simple triadic and dominant harmonies into the various types of 9th, 11th, and 13th chords, all manner of substitute harmonizations, and wide-ranging modulations.
The Christian Bible, including the New Testament, has no trinitarian statements or speculations concerning the doctrine of the Trinity only triadic liturgical formulas invoking God the Father, Son, and Holy Spirit.
As long as the notes are exclusively triadic factors and their octave equivalents, the chord is still considered a triad.
A set of ordered pairs is called a two-place (or dyadic) relation; a set of ordered triples is a three-place (or triadic) relation; and so on.
Peirce recognized that the fundamental relations of information are essentially triadic; in contrast, all relations of the physical sciences are reducible to dyadic (binary) relations.
An early theorist and practitioner in avant-garde theatre was the German artist Oskar Schlemmer, who taught at the Bauhaus from 1920 to 1929 and is perhaps best known for Das triadische Ballet (1916 22; "The Triadic Ballet"), which called for complex movements and elaborate costumes.
In African Political Systems (1940), Meyer Fortes and Edward Evans-Pritchard proposed a triadic classification of African polities.
But in the ensuing 15th century the simpler melodic and rhythmic ideas associated with the rich harmonies of the English style were eagerly embraced; often melodies were outright triadic in contour; i.e., they outlined the intervals of the triad, an increasingly important chord composed of two linked thirds (e.g., C-E-G).
In one of the last stages of this line of thought (Chandogya Upanishad), the following account became fundamental to the ontology of the philosophical schools of Vedanta: in the beginning was the Existent, or brahman, which, through heaven, earth, and atmosphere (the triadic space) and the three seasons of summer, rains, and harvest (the triadic time), produced the entire universe.
