noun
quartet
kwor-TET/kwɔːrˈtet/
A group of four performers or related units.
The string quartet plays softly as guests arrive for dinner.

Etymology
The base meaning ‘fourth,’ with a diminutive ending, named music for four solo instruments or voices. The name then transferred from the composition to the four performers, connecting it to a group of four.
In context
In a small group like a string quartet with just four people, the cello is the anchor.
More examples
- Two vocal quartets sing at the festival.
- She plays piano in a jazz quartet.
- A quartet of essays explores the city's changing neighborhoods.
Forms
quartet · quartets
Similar words
- foursome
- Usually four people together, especially for recreation or social activities.
- ensemble
- A performing group of any size, not necessarily four.