1. the arrangement of placentas in a plant ovary or the way seeds are attached within a fruit
Usage: botanical
2. the formation and structure of the placenta in mammals
Usage: medical; biological

Examples

• The botanist studied the placentation patterns in different flower species.
• Axile placentation occurs when ovules are attached to a central column.
• Parietal placentation is common in many flowering plants.
• The doctor explained placentation during fetal development.
• Abnormal placentation can lead to pregnancy complications.
• Students learned about different types of placentation in biology class.