lumen
looh muhn
- n a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
- n a cavity or passage in a tubular organ
the lumen of the intestine
- When ORS reaches the small intestine, the sodium-glucose co-transport pathway moves sugar from the hollow part of the intestine (lumen) to its lining (epithelium) through the villi.
- Fecal matter sometimes slips from the caecum into its narrow opening, or lumen, putrifies there and causes the various forms of appendicitis.
- No fluid oozed through the needle's lumen.