Triad

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triad

1. Chem an atom, element, group, or ion that has a valency of three
2. Music a three-note chord consisting of a note and the third and fifth above it
3. an aphoristic literary form used in medieval Welsh and Irish literature

Triad

any of several Chinese secret societies, esp one involved in criminal activities, such as drug trafficking

triad

see DYAD AND TRIAD.

Triad

 

in music, a chord whose tones are arranged, or may be arranged, in thirds.

The term “triad” encompasses four chords that differ in structure and expressive quality. The division of a perfect fifth into two unequal thirds produces the two main types of triad: major (a major third plus a minor third) and minor (a minor third plus a major third), both of which are consonant. The major triad coincides with the first six tones of the harmonic series and, possibly because of this “natural” character, has a bright, joyful coloration. The minor triad opposes the “natural” order and has a dark, mournful sound. Consonant triads were the harmonic foundation of the major and minor tonal system that prevailed from the 17th through the 19th century. Major and minor triads form the basis of the two main tonalities of European music—major and minor. Consonant triads have remained significant even in 20th-century music.

Two triads composed of equal intervals are particularly important: the augmented triad, comprising two major thirds, and the diminished triad, comprising two minor thirds. Because they violate the consonance of a perfect fifth, both lack stability, force, and consonance, especially the diminished triad, which contains the dissonance of a diminished fifth. For this reason, their application is limited.

IU. N. KHOLOPOV


Triad

 

a term denoting the three-stage cycle, or triadic progression, of being and thought. As a theoretical concept, the triad was studied by Plato and the Neoplatonists, and particularly by Proclus. The triad forms the basic dialectical principle of development in the works of the German classical idealists—J. G. Fichte, F. von Schelling, and especially G. Hegel. According to Hegel, for whom the triad is also a means of constructing a philosophical system, all development consists of three stages: thesis, antithesis, and synthesis. The antithesis negates the thesis, and the synthesis in turn negates the antithesis. The synthesis, however, preserves and combines within itself certain properties of the preceding stages of development.

While accepting the principle of the triadic development of being and knowledge, the founders of Marxism rejected the Hegelian premise that the subject of triadic development is the absolute idea. In dialectical materialism, the concept of development must be understood not in terms of triads but as a process of contradictions—that is, a process involving the sublation of contradictions at a higher level of development by means of negation and the negation of the negation.

V. F. ASMUS

triad

[′trī‚ad]
(computer science)
A group of three bits, pulses, or characters forming a unit of data.
(electronics)
A triangular group of three small phosphor dots, each emitting one of the three primary colors on the screen of a three-gun color picture tube.
(navigation)
References in periodicals archive ?
Although the female athlete triad poses a great health risk, the benefits of participation in sports significantly outweigh the risks.
Eight percent screened positive for all three components of the female athlete triad, which is characterized by a hypoestrogenic state similar to menopause.
While all three conditions are harmful to women, the key factor of the female athlete triad to consider is low energy availability, which occurs when the amount of energy consumed is less than the amount of energy expended.
Characteristics of the Female Athlete Triad in collegiate cross-country runners.
It's important to realize, when [you screen] for the female athlete triad, that the main priority really should be looking for low energy intake," Dr.
Recognizing the female athlete triad is the first step in treatment.
Female Athlete Triad is three separate but interrelated conditions of disordered eating, amenorrhea and osteoporosis.
It's important to realize, when [you screen] for the female athlete triad, that the main priority really should be looking for low energy intake, which of course could be some type of disordered eating for these female athletes," Dr.
In the Female Athlete Triad (see Mar/Apr 2004, page one), a deficit of calories causes deteriorating performance, an inability to menstruate (amenorrhea) and a heightened risk of stress fracture.
Creator and Program Director, Karen Sossin, MS, CDN, on the topics of sports nutrition and Female Athlete Triad - a syndrome which includes insufficient caloric intake leading to menstrual disturbances which can weaken bones and result in serious health and performance complications.
This sample was stratified based on age-group and "risk-profile" for the female athlete triad (Torstveit and Sundgot-Borgen, 2005b).