1. A set of three similar things considered as a unit
   "The chef prepared a triad of desserts for the tasting menu";
   - trio, triplet, triple
    
2. Three people considered as a unit
   "The triad of scientists collaborated on groundbreaking research";
   - trio, threesome, trinity
    
3. A three-note major or minor chord; a note and its third and fifth tones
   "The C major triad consists of C, E, and G";
   - common chord
    
4. A Chinese society or gang involved in organized crime
   "The police investigation uncovered links between local businesses and a powerful triad"

Derived forms: triads

Type of: assemblage, chord, gathering, set

Encyclopedia: Triad