Triad (environmental science)
WordNet
noun
(1) A three-note major or minor chord; a note and its third and fifth tones
(2) Three people considered as a unit
(3) A set of three similar things considered as a unit
(4) The cardinal number that is the sum of one and one and one
WiktionaryText
Etymology
From , stem of , from ; applied by British authorities to underground society in Hong Kong based on geometry of Chinese character.
Noun
- A grouping of three
- A chord consisting of a root tone, the tone two degrees higher, and the tone four degrees higher in a given scale.
- on a CRT display, A group of three neighbouring phosphor dots, coloured green, red, and blue.
- A collective term that describes many branches of the underground society based in Hong Kong.