A painful, red, raised skin lesion, usually on the pads of the fingers or toes, indicative of the heart disease bacterial endocarditis.

(anatomy) A small constriction in the myelin sheath of axons

(anatomy, immunology) Each of the small oval bodies of the lymphatic system, distributed along the lymphatic vessels, that are clustered in the armpits, groin, neck, chest and abdomen. They act as filters, with an internal honeycomb of connective tissue filled with lymphocytes and macrophages that collect and destroy bacteria, viruses and foreign matter from lymph. When the body is fighting an infection, these lymphocytes multiply rapidly and produce a characteristic swelling of the lymph nodes.

(anatomy, immunology) Synonym of lymph node.

plural of lymph node

plural of lymphatic node

(anatomy) The retropharyngeal lymph node found at the base of the fossa of Rosenmüller.

(anatomy) A lymph node in the left supraclavicular fossa that may indicate cancer in the abdomen if it is hard and enlarged.

plural of leaf node

(medicine) a small structure in the heart, located in the Koch's triangle, near the coronary sinus on the interatrial septum