1. In botany, relating to or denoting a plant stem or root in which the primary xylem develops from the center outward toward the periphery.
Usage: botanical term; technical

Examples

• The endarch arrangement of xylem tissue is characteristic of many flowering plants.
• In endarch stems, the primary xylem matures from the inside outward.
• Botanists distinguish between endarch and exarch vascular development patterns.
• The root's endarch structure allows for efficient water transport from the center.
• Endarch xylem development is common in dicots and some monocots.