three
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious and cultural significance in many societies ...
Humanities
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Trichotomy (philosophy)
A trichotomy is a three-way classificatory division. Some philosophers pursued trichotomies.
History
Important trichotomies discussed by Aquinas include the causal principles (agent, patient, act), the potencies for the intellect (imaginatio ...
, often called triads
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Triad (sociology)
Triad refers to a group of three people in sociology. It is one of the simplest human groups that can be studied and is mostly looked at by microsociology. The study of triads and dyad (sociology), dyads was pioneered by Germany, German sociologi ...
, a group of three people as a unit of study
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Triad (relationship)
Triad or triade may refer to:
* a group of three
Humanities
* Trichotomy (philosophy), often called triads
* Triad (sociology), a group of three people as a unit of study
* Triad (relationship), or ''ménage à trois''
Music
* Triad (mus ...
, or ''ménage à trois''
Music
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Triad (music)
In music, a triad is a set of three notes (or "pitch classes") that can be stacked vertically in thirds.Ronald Pen, ''Introduction to Music'' (New York: McGraw-Hill, 1992): 81. . "A triad is a set of notes consisting of three notes built on succe ...
, chord consisting of root, third and fifth
Science and technology
* Triad (anatomy), structure in skeletal muscles, formed by a T tubule surrounded by sarcoplasmic reticulum
* Triad (computing), 3 bits of information storage
* Triad (environmental science), management system for environmental cleanup
* Triad (monitors), group of three phosphor dots used in some computer monitors
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List of medical triads, tetrads, and pentads
A medical triad is a group of three signs or symptoms, the result of injury to three organs, which characterise a specific medical condition. The appearance of all three signs conjoined together in another patient, points to that the patient has t ...
Triad (religion)
A triad, in a religious context, refers to a grouping of three gods, usually by importance or similar roles. A triad of gods were usually not considered to be one in the same being, or different aspects of a single deity as in a Trinity or Triple ...
Triad (organized crime)
A triad ( zh, t=三合會, s=三合会, hp=sān hé huì, cy=sāam hahp wúi) is a Chinese transnational organized crime syndicate based in Greater China with outposts in various countries having significant overseas Chinese populations.
The tri ...
, a Chinese transnational organized crime syndicate
* TRIAD Berlin, a German exhibit design company
* Triad Broadcasting, an American radio station operator
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Triad High School (disambiguation) Triad High School may refer to:
* Triad High School (Illinois)
* Triad High School (North Lewisburg, Ohio)
* Triad School, Klamath Falls, Oregon
{{schooldis
"group of 4")
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Hendiatris
Hendiatris ( ; ) is a figure of speech used for emphasis, in which three words are used to express one idea. The phrases "sun, sea and sand", and " wine, women and song" are examples.
A tripartite motto is the conventional English term for a mot ...