Triad



  • Hutchinson’s triad
    - រោគធ្មេញដោយសារជំងឺស្វាយក្រាបពីកំណើត
ENGLISH MEANING
noun
1.
A union of three; three objects treated as one; a ternary; a trinity; as, a triad of deities.
2.
A chord of three notes.
3.
The common chord, consisting of a tone with its third and fifth, with or without the octave.
4.
An element or radical whose valence is three.