1. plural of pentamery; the condition or quality of having five parts or divisions, especially in botany and zoology where organisms or structures are arranged in groups of five.
Usage: technical; biology

Examples

• The pentameries of starfish make them distinctive among echinoderms.
• Botanists study pentameries in flowers to understand their evolutionary relationships.
• The pentameries observed in certain sea creatures reflect their radial symmetry.
• Pentameries is a common characteristic in the phylum Echinodermata.