1. relating to or located within the lumen (the hollow interior space of a tubular structure)
Usage: medical; biological

Examples

• The lumenal surface of the blood vessel was examined for damage.
• Researchers studied the lumenal contents of the intestine.
• The catheter was positioned in the lumenal space of the artery.
• Lumenal pressure increased during the procedure.
• The endoscope provided a clear view of the lumenal wall.