1. plural of didynamy; a botanical classification of plants having four stamens of unequal length arranged in two pairs
Usage: botany; technical; historical classification system

Examples

• The didynamies class includes many flowering plants with distinctive stamen arrangements.
• Botanists of the 18th century used didynamies as one of their primary classification systems.
• Plants in the didynamies group were recognized by their four stamens of two different lengths.