Definitions

1. noun

A group or period of five; a five-day week or a five-act play.

“The play consisted of a pentad of five acts, each one revealing a different aspect of the protagonist’s life.”

2. noun

A set of five related things, such as the five elements in ancient Greek philosophy.

“The ancient Greek philosopher believed that the world was composed of five elements: earth, air, fire, water, and aether.”

3. adjective

Consisting of five parts or elements.

“The pentad rhythm in music is characterized by a repeated pattern of five notes.”