Standard Lemma guide

triad

noun · 10 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈtɹaɪ.æd/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -aɪæd
  • CMU ARPABET: T R AY1 AE2 D Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A grouping of three.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: threesome, trine, trinity, trio, triplet, troika, triumvirate, tern, ternary, ternion, threeness, triad, trinary

Antonyms: none provided

2

noun

Meaning 2

A grouping of three.

A romantic or sexual relationship between three individuals; a throuple.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: threesome, trine, trinity, trio, triplet, troika, triumvirate, tern, ternary, ternion, threeness, triad, trinary

Antonyms: none provided

3

noun

Meaning 3

A word of three syllables.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: trisyllable

Antonyms: none provided

4

noun

Meaning 4

A branch of a Chinese underground criminal society, mostly based in Hong Kong.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

On a CRT display, a group of three neighbouring phosphor dots, coloured green, red, and blue.

Definition source: English Wiktionary via Wiktextract

Topics: business, electrical-engineering, electricity, electromagnetism, electronics, energy, engineering, natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A chord consisting of a root tone, the tone two degrees higher, and the tone four degrees higher in a given scale OR any chord with three notes.

Definition source: English Wiktionary via Wiktextract

Topics: entertainment, lifestyle, music

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

a three-note major or minor chord; a note and its third and fifth tones

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: common chord

Antonyms: none provided

Broader terms: chord

8

noun

Meaning 8

three people considered as a unit

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: trio, threesome, trinity

Antonyms: none provided

Broader terms: gathering, assemblage

Narrower terms: triumvirate

9

noun

Meaning 9

a set of three similar things considered as a unit

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: trio, triplet, triple

Antonyms: none provided

Broader terms: set

Narrower terms: trilogy, triplicity, trigon, Trimurti

10

noun

Meaning 10

the cardinal number that is the sum of one and one and one

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: three, 3, III, trio, threesome, tierce, leash, troika, trine, trinity, ternary, ternion, triplet, tercet, terzetto, trey, deuce-ace

Antonyms: none provided

Broader terms: digit, figure

History

Etymology

PIE word *tréyes From Latin triad-, stem of trias (“three, triad”), from Ancient Greek τριάς (triás). By surface analysis, tri- + -ad. Sense 3 (“branch of a Chinese underground criminal society”) is due to the word being applied by the British authorities to underground society in Hong Kong based on the geometry of the Chinese character, derived from a name used by some of those societies, 三合會 /三合会 (sānhéhuì, “Three Harmonies Society”), referring to the union between heaven, earth, and humanity.

Across languages

Translations

45 source translations are retained for this English entry.

  • Bulgarian: тройка (trojka) — grouping of three
  • Czech: triáda — grouping of three
  • Esperanto: triopo — grouping of three
  • Finnish: kolmikko — grouping of three
  • French: triade — grouping of three
  • French: trio — grouping of three
  • Galician: tríade — grouping of three
  • German: Triade — grouping of three
  • Greek: τριάδα (triáda) — grouping of three
  • Ancient Greek: τριάς (triás) — grouping of three
  • Italian: triade — grouping of three
  • Norwegian: trio — grouping of three
  • Norwegian: triade — grouping of three
  • Occitan: triada — grouping of three
  • Russian: триа́да (triáda) — grouping of three
  • Spanish: tríada — grouping of three
  • Spanish: triada — grouping of three
  • Spanish: tríade — grouping of three
  • Swedish: trio — grouping of three
  • Swedish: triad — grouping of three
  • Turkish: üçlü — grouping of three
  • Chinese Cantonese: 三和弦 (saam1 wo4 jin4) — musical chord
  • Chinese Mandarin: 三和弦 (sānhéxián) — musical chord
  • Czech: kvintakord — musical chord
  • Czech: trojzvuk — musical chord
  • Finnish: kolmisointu — musical chord
  • German: Dreiklang — musical chord
  • Korean: 삼화음 (samhwa'eum) — musical chord
  • Swedish: treklang — musical chord
  • Vietnamese: liên ba — musical chord
  • Chinese Cantonese: 三合會 /三合会 — underground society
  • Chinese Cantonese: 黑社會 /黑社会 — underground society
  • Chinese Mandarin: 三合會 /三合会 (sānhéhuì) — underground society
  • Chinese Mandarin: 黑社會 /黑社会 (hēishèhuì) — underground society
  • Finnish: triadi — underground society
  • French: triade — underground society
  • German: Triade — underground society
  • Italian: triade — underground society
  • Japanese: 三合会 (sangōkai) — underground society
  • Korean: 삼합회 (samhaphoe) — underground society
  • Mongolian: триад (triad) — underground society
  • Russian: триа́да (triáda) — underground society
  • Swedish: triad — underground society
  • Vietnamese: Hội Tam Hoàng — underground society
  • Vietnamese: xã hội đen — underground society
Real reading context

triad in complete knowledge articles