triads

/tษนaษช.รฆdz/
noun
  1. 1
  2. 2

    A word of three syllables.

  3. 3

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

  4. 4

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

  5. 5

    A chord consisting of a root tone, the tone two degrees higher, and the tone four degrees higher in a given scale.

Source: https://en.wiktionary.org/wiki/triad, https://en.wiktionary.org/wiki/triads