A triad, a group of three, may refer to:


*Triad, group of three phosphor dots used in some computer monitors
*Triad C64, Commodore 64 cracking group
*"Rise Of The Triad", a computer game
*TriadCity, a MUD with strong literary themes


*Triad, a 1967 song by David Crosby, with versions recorded by Jefferson Airplane on "Crown of Creation", by Crosby, Stills Nash & Young on "Four Way Street", and by the Byrds on "The Notorious Byrd Brothers"
*Triad, a 1976 album by Spontaneous Combustion.
*Triad, a song by progressive rock band Tool from their 2001 album "Lateralus"
*The Hong Kong Triad, a song by Thievery Corporation from their 2000 album "The Mirror Conspiracy"
*Triad (music), set of three notes, most commonly forming a diatonic tertian chord
*The Triad (Charmed), a fictional group of three powerful demons
*Triiad, a fictional alien species from the television series "Hypernauts"
*Triad, alias of fictional DC Comics super hero Triplicate Girl


*Welsh Triads, collections of Medieval Welsh legend and history


*Triad (anatomy), structure in skeletal muscles, formed by a T tubule surrounded by sarcoplasmic reticulum
*Catalytic triad, biochemical term for three amino acid residues found within some proteases
*Beck's triad (cardiology), three typical symptoms of cardiac tamponade
*Beck's cognitive triad, three types of negative thought present in depression
*Charcot's triad, either of two sets of clinical signs, relating to multiple sclerosis or ascending cholangitis
*Currarino triad, three malformations with a genetic link
*Cushing's triad, a set of three signs showed by patients with head injuries
*Dieulafoy's triad, a classic sign of acute appendicitis
*Female athlete triad, three symptoms of low energy availability in female athletes
*Hutchinson's triad, a common pattern of presentation for congenital syphilis
*Meckler's triad, used to diagnose Boerhaave syndrome
*Virchow's triad, a set of three signs attributed to Rudolf Virchow describing the pathogenesis of venous thrombosis
*Whipple's triad, a set of three conditions proving hypoglycemia as the cause of a person's symptoms
*MacDonald triad, three childhood traits that are associated with anti-social personality disorder


*Triad, Pythagorean symbol for the number three


*The Piedmont Triad, North Carolina, USA region


*Triad, term for a relationship between three people,


*Triad, three deities commonly associated together.
*Triplism frequently occurring in religion and mythology


*Triad, management system for environmental cleanup
*Triad Demand, UK electrical power demand measurement


*Triad, term for a group of three people as a unit of study
*Triad, a term that describes many branches of (criminal) Chinese underground society, such as those in Hong Kong and around the world


*Triad, a fictional ball sport within the Battlestar Galactica series

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  • triad — [trī′ad΄] n. [< LL trias (gen. triadis) < Gr trias (gen. triados) < treis,THREE] 1. a group of three persons, things, ideas, etc.; trinity 2. a musical chord of three tones, esp. one consisting of a root tone and its third and fifth: a… …   English World dictionary

  • Triad — Tri ad, n. [L. trias, adis, Gr. ?, ?, fr.?, ?, three: cf. F. triade. See {Three}, and cf. {Trias}, {Trio}.] 1. A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities. [1913 Webster] 2. (Mus.) (a) A chord of… …   The Collaborative International Dictionary of English

  • triad — ► NOUN 1) a group or set of three connected people or things. 2) (also Triad) a Chinese secret society involved in organized crime. DERIVATIVES triadic adjective. ORIGIN Greek trias, from treis three …   English terms dictionary

  • triad — (= triad junction) The junction between the T tubules and the sarcoplasmic reticulum in striated muscle …   Dictionary of molecular biology

  • triad — англ. [тра/йэд] triade ит. [триа/дэ], фр. [триад] Triade нем. [триа/дэ] трезвучие …   Словарь иностранных музыкальных терминов

  • triad — 1540s, group or set of three, from L.L. trias (gen. triadis), from Gk. trias (gen. triados), from treis three (see THREE (Cf. three)). Musical sense of chord of three notes is from 1801 …   Etymology dictionary

  • triad — triadic, adj. triadism, n. /truy ad, euhd/, n. 1. a group of three, esp. of three closely related persons or things. 2. Chem. a. an element, atom, or group having a valence of three. Cf. monad (def. 2), dyad (def. 3) …   Universalium

  • triad — [[t]tra͟ɪæd[/t]] triads (The spelling Triad is also used for meaning 1.) 1) N COUNT: usu pl, oft N n The Triads were Chinese secret societies in old China that were often associated with organized crime. Chinese gangs from Hong Kong, known as the …   English dictionary

  • triad — 1. A collection of three things having something in common. 2. The transverse tubule and the terminal cisternae on each side of it in skeletal muscle fibers. 3. SYN: portal t.. 4. The father, mother, and child relationship projectively… …   Medical dictionary

  • triad — Synonyms and related words: arpeggio, broken chord, chord, clover, common chord, concento, concord, consonant chord, deuce ace, diminished seventh chord, dominant chord, enharmonic, leash, major triad, minor chord, set of three, seventh chord,… …   Moby Thesaurus

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