triad

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triad
left to right: C major, E minor, and D diminished triads

tri·ad

 (trī′ăd′, -əd)
n.
1. A group of three.
2. Music A chord of three tones, especially one built on a given root tone plus a major or minor third and a perfect fifth.
3. A section of a Pindaric ode consisting of the strophe, antistrophe, and epode.

[Late Latin trias, triad-, from Greek, the number three; see trei- in Indo-European roots.]

tri·ad′ic (trī-ăd′ĭk) adj.

triad

(ˈtraɪæd)
n
1. a group of three; trio
2. (Chemistry) chem an atom, element, group, or ion that has a valency of three
3. (Music, other) music a three-note chord consisting of a note and the third and fifth above it
4. (Literary & Literary Critical Terms) an aphoristic literary form used in medieval Welsh and Irish literature
5. (Military) the US strategic nuclear force, consisting of intercontinental ballistic missiles, submarine-launched ballistic missiles, and bombers
[C16: from Late Latin trias, from Greek; related to Greek treis three]
triˈadic adj
ˈtriadism n

Triad

(ˈtraɪæd)
n
(Law) any of several Chinese secret societies, esp one involved in criminal activities, such as drug trafficking

tri•ad

(ˈtraɪ æd, -əd)

n.
1. a group of three, esp. of three closely related persons or things.
2.
a. an element, atom, or group having a valence of three.
b. a group of three closely related compounds or elements, as isomers or halides.
3. the basic chord of a musical tonality, consisting of a tonic, a third, and a fifth.
[1540–50; < Latin triad-, s. of trias < Greek triás. See tri-, -ad1]
tri•ad′ic, adj.
tri′ad•ism, n.

Triad

 a group of three.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.triad - the cardinal number that is the sum of one and one and onetriad - the cardinal number that is the sum of one and one and one
digit, figure - one of the elements that collectively form a system of numeration; "0 and 1 are digits"
2.triad - a set of three similar things considered as a unittriad - a set of three similar things considered as a unit
trilogy - a set of three literary or dramatic works related in subject or theme
triplicity, trigon - (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees
set - a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth"
3.triad - three people considered as a unittriad - three people considered as a unit  
assemblage, gathering - a group of persons together in one place
triumvirate - a group of three men responsible for public administration or civil authority
4.triad - a three-note major or minor chordtriad - a three-note major or minor chord; a note and its third and fifth tones
chord - a combination of three or more notes that blend harmoniously when sounded together

triad

noun threesome, triple, trio, trinity, trilogy, triplet, triumvirate, triptych, trine, triune the triad of responsibilities: teaching, research and service

triad

noun
A group of three individuals:
Translations

triad

[ˈtraɪəd] Ntríada f

Triad

n (= Chinese secret society)Triade f

triad

nTriade f, → Trias f; (Mus) → Dreiklang m; (Chem) → dreiwertiges Element

tri·ad

n. triada, grupo de tres elementos que se relacionan entre sí.