Definitions

1. noun

A pair of two things, especially two things that are closely associated or connected.

“The researchers studied the dyad of mother and child, exploring their emotional bond.”

2. noun

In biology, a group of two cells or organisms that are genetically identical and often identical in structure or function, such as in some types of fungi or algae.

“The biologist studied the dyad of conjoined twins, marveling at their unique genetic makeup.”

3. noun

In music, a duet or a pair of instruments or voices that play together, especially in harmony.

“The pianist and the violinist formed a beautiful dyad, their melodies intertwining in perfect harmony.”