See Also: Triad(tourism)
triad(dictionary)
Triad(encyclopedia)
triad(dictionary)
Triad(health)
Triad(medicine)
portal triad(medicine)
Triad Hospitals(finance)
Triad Hospitals(health)
hepatic triad(medicine)

triad (iou)



triad noun. M16.
[French triade or late Latin triad-, trias from Greek triad-, trias, from tri- TRI-: see -AD1.]
1. A group or set of three (persons, things, attributes, etc.); spec. (a) Christian Theology the Trinity; (b) a Welsh form of literary composition characterized by an arrangement of subjects or statements in groups of three. M16.
2. In Pythagoreanism, the number three. M17.
3. Music. A chord of three notes, consisting of a given note with the third and fifth above it. M18.
E. Prout A chord..containing a major third and an augmented fifth..is called an augmented triad.
4. (Usu. Triad.) Orig., a Chinese secret society formed in the early 18th cent., later having a large membership in southern China and various foreign countries (also more fully Triad Society). Now also, (a member of) any of several Chinese secret societies in various countries, usu. involved in criminal activities. Freq. attrib. E19.
5. Chemistry. Orig., a trivalent element or group. Now, a trimeric unit within a polymer. M19.
tri'adic adjective of, pertaining to, or constituting a triad; consisting of triads: L18.
tri'adically adverb M19.
triadism noun a triadic method, system, principle, or arrangement M19.