LUMEN (lumina)

Pronunciation (US):

(GB):

IPA (US):

Irregular inflected form: lumina   

 Dictionary entry overview: What does lumen mean? 

• LUMEN (noun)
  The noun LUMEN has 2 senses:

1. 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

2. a cavity or passage in a tubular organ

  Familiarity information: LUMEN used as a noun is rare.

 Dictionary entry details 

• LUMEN (noun)

Sense 1

Meaning:

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

Classified under:

Nouns denoting quantities and units of measure

Synonyms:

lm; lumen

Hypernyms ("lumen" is a kind of...):

luminous flux unit (a measure of luminous flux per unit area)

Sense 2

Meaning:

A cavity or passage in a tubular organ

Classified under:

Nouns denoting body parts

Context example:

the lumen of the intestine

Hypernyms ("lumen" is a kind of...):

bodily cavity; cavity; cavum ((anatomy) a natural hollow or sinus within the body)

 Context examples 

Deficient blood distribution to the limbs caused by narrowing or obstruction of the lumen of the peripheral arteries.

(Peripheral Ischemia, NCI Thesaurus)

Narrowing of the lumen of the right or left pulmonary artery branch.

(Branch Pulmonary Artery Stenosis, NCI Thesaurus)

Narrowing of the lumen of the pancreatic duct.

(Pancreatic Duct Stenosis, NCI Thesaurus)

A disorder characterized by a narrowing of the lumen of the bile duct.

(Bile Duct Stenosis, NCI Thesaurus/CTCAE)

The free part of the epithelium that faces the interior surface of the lumen of an organ or towards the interstitium.

(Basal Domain of the Epithelium, NCI Thesaurus)

A benign, well circumscribed neoplasm that is located within the lumen of a duct in the breast parenchyma.

(Breast Ductal Adenoma, NCI Thesaurus)

Disorder caused by the occlusion of the lumen of the peripheral arteries.

(Peripheral Arterial Occlusive Disease, NCI Thesaurus)

A disorder characterized by a narrowing of the lumen of the pancreatic duct.

(Pancreatic Duct Stenosis, NCI Thesaurus/CTCAE)

Pancreatic proteolytic enzymes include trypsin, chymotrypsin and carboxypeptidase; these enzymes are secreted as zymogens, inactive precursors of the enzymes, and are activated in the lumen of the digestive canal.

(Pancreatic Proteolytic Enzymes, NCI Thesaurus)

It is characterized by the formation of thin papillae projecting within the lumen of blood vessels.

(Papillary Endothelial Hyperplasia, NCI Thesaurus)