1. A tetrad is a group of four things or people.
2. In genetics, a tetrad is a group of four chromatids formed during meiosis.
3. The four musicians formed a tetrad and played a beautiful piece together.
4. The tetrad of planets aligned perfectly in the night sky.
5. The teacher divided the students into a tetrad for a group project.
6. The tetrad of friends went on a road trip together.
7. The scientist studied the tetrad of cells under the microscope.
8. The tetrad of colors used in the painting created a harmonious composition.
9. The apartment building had a tetrad of identical units on each floor.
10. The company's marketing strategy focused on a tetrad of key demographics.