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triad

  (trī'ăd', -əd) pronunciation
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.]

triadic tri·ad'ic (trī-ăd'ĭk) adj.
 
 
Thesaurus: triad

noun

    A group of three individuals: three, threesome, trine, trinity, trio, triple, triumvirate, triune, triunity, troika. See group.

 

triad, in a Greek lyric poem, a group of three stanzas, of which the first two, called strophē and antistrophē, are symmetrical, i.e. correspond in metre, but the third, called the epode, has a different though related metrical form. If the poem consists of more than one triad the epodes, at least in Pindar, correspond with one another, as do all the strophes and antistrophes. This form of composition, which broke the monotony of a long series of similar stanzas, was thought to have been introduced by Stesichorus and followed by Simonides and Pindar. It is generally believed that lyric poetry written in triadic form was sung and danced by a chorus, whereas monodic lyric was usually sung by an individual (see LYRIC POETRY 1).

 

In medicine, a group of three closely associated structures, or three symptoms that tend to occur together. See also triad response.

 

1. an element with a valence of three.
2. a group of three similar bodies, or a complex composed of three items or units.

  • t's of the tarsus — the various combinations of (usually three) injuries that occur in trauma to the hock joint, based first on injury to the central tarsal bone.
  • Virchow's t. — see virchow's triad.
  • Whipple's t. — see whipple's triad.
 
Word Tutor: triad
pronunciation

IN BRIEF: A set of three similar things considered as a unit.

pronunciation Driving forward is the chief characteristic of western man since the Sumerians. His dread triad of vices is property-holding, voraciousness, and lust. — Antonio

 
Wikipedia: triad (music)

In music or music theory, a triad is a three-note chord (or, more generally, any set of three notes, pitches, or tones). Because the term originated during the "common practice" period in Western European art music (approximately from 1600 to 1900), it is most commonly associated with tertian diatonic chords having a tonal function. When such a chord is voiced in thirds, its members, ascending from lowest pitched tone to highest, are called:

The function of a given triad is determined primarily by its root tone and the degree of the scale it corresponds to, but also by the quality of the chord (the exact third and fifth).

There are four basic tertian triads: major, minor, diminished and augmented. All but the augmented triad can be derived from the Major (or diatonic) scale. Triads (and all other larger tertian chords) are built by combining or stacking every other tone the scale above each individual degree (or scale-tone) of the given seven-tone scale. The four triads are built of the following intervals:

  • Major triads contain a major third and perfect fifth interval, symbolized: R 3 5 (or 0-4-7 as semitones)
  • minor triads contain a minor third, and perfect fifth, symbolized: R ♭3 5 (or 0-3-7)
  • diminished triads contain a minor third, and diminished fifth, symbolized: R ♭3 ♭5 (or 0-3-6)
  • augmented triads contain a major third, and augmented fifth, symbolized: R 3 #5 (or 0-4-8)

Primary triads of a diatonic key (major or minor) include the tonic, subdominant, and dominant degree chords, otherwise symbolized: I, IV, and V respectively.

In the twentieth century, the term triad was broadened (by Howard Hanson, for example, in his Harmonic Materials of Modern Music: Resources of the Tempered Scale[1], by Carleton Gamer in his "Some Combinational Resources of Equal-Tempered Systems"[2] and by others) to include three-note chords made of intervals other than thirds. We can speak thus of quartal triads, secundal triads, and so on.

Links

References

  1. ^ Hanson, H (1960) Harmonic Materials of Modern Music, Irvington, ISBN: 978-0891972075
  2. ^ Gamer, C (1967) Some Combinational Resources of Equal-Tempered Systems, Journal of Music Theory, Vol. 11, No. 1 (Spring, 1967), pp. 32-59





Chords

By Type Triad Major · Minor · Augmented · Diminished · Suspended

Seventh Major · Minor · Dominant · Diminished · Half-diminished · Minor-major · Augmented major · Augmented minor

Extended Ninth · Eleventh · Thirteenth

Other Sixth · Augmented sixth · Altered · Added tone · Polychord · Quartal and quintal · Tone cluster· Power

By Function Diatonic Tonic · Dominant · Subdominant · Submediant

Altered Borrowed · Neapolitan chord · Secondary dominant · Secondary subdominant


 
Translations: Translations for: Triad

Dansk (Danish)
n. - trehed, samling af tre, treklang

Nederlands (Dutch)
drie-eenheid

Français (French)
n. - (gén, Chim) triade, (Littérat) trio, (Mus) accord parfait

Deutsch (German)
n. - Dreiheit, Dreiklang, Triade

Ελληνική (Greek)
n. - τριάδα, κινέζικη μαφία, (χημ.) τρισθενές στοιχείο

Italiano (Italian)
triade

Português (Portuguese)
n. - tríade (f)

Русский (Russian)
нечто, состоящее из трех частей, (мат.) триада, (муз.) трезвучие, тайное китайское общество преступников

Español (Spanish)
n. - trío, tríada, elemento trivalente

Svenska (Swedish)
n. - triad, tretal, trefald, treenighet

中文(简体) (Chinese (Simplified))
三人一组, 三合一, 三件一套, 三和弦

中文(繁體) (Chinese (Traditional))
n. - 三人一組, 三合一, 三件一套, 三和弦

한국어 (Korean)
n. - 3인조, 세 개 한 벌, 3가 원소

日本語 (Japanese)
n. - 三つ組, 三つ組元素

العربيه (Arabic)
‏(الاسم) مجموعه من ثلاثه أشخاص أو أشسياء‏

עברית (Hebrew)
n. - ‮שלישייה, חוט משולש‬


 
 

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