|1.||a spongy highly vascular organ situated near the stomach in man. It forms lymphocytes, produces antibodies, aids in destroying worn-out red blood cells, and filters bacteria and foreign particles from the bloodRelated: lienal, splenetic, splenic|
|2.||the corresponding organ in other animals|
|3.||spitefulness or ill humour; peevishness: to vent one's spleen|
|4.||archaic the organ in the human body considered to be the seat of the emotions|
|5.||archaic another word for melancholy|
|6.||obsolete whim; mood|
|Related: lienal, splenetic, splenic|
|[C13: from Old French esplen, from Latin splēn, from Greek; related to Latin lien spleen]|
A large, highly vascular lymphoid organ, lying to the left of the stomach below the diaphragm and serving to store blood, disintegrate old blood cells, filter foreign substances from the blood, and to produce lymphocytes.
|spleen (splēn) Pronunciation Key
An organ in vertebrate animals that in humans is located on the left side of the abdomen near the stomach. The spleen is mainly composed of lymph nodes and blood vessels. It filters the blood, stores red blood cells (erythrocytes) and destroys old ones, and produces white blood cells (lymphocytes).
An organ in the lymphatic system, in the upper left part of the abdomen, that filters out harmful substances from the blood. The spleen also produces white blood cells, removes worn-out red blood cells from circulation, and maintains a reserve blood supply for the body.
see vent one's spleen.