pentamery
/ˈpɛntəˌmɛri/
noun
- A five-part arrangement or structure, especially in botany where flowers have five petals or other parts in sets of five.
- Many common garden flowers exhibit pentamery in their floral organs.
- The pentamery of the rose flower is easy to see with its five petals.
- Botany students learn about pentamery when studying the structure of dicot plants.