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Definition of Habenula
1. Noun. (anatomy) A circumscript mass of cells in the caudal and dorsal aspect of the dorsal thalamus ¹
¹ Source: wiktionary.com
Medical Definition of Habenula
1. A small protuberance at the dorsal, posterior corner of the wall of the third ventricle, adjacent to the dorsal thalamus and pineal body. It contains the habenular nuclei and is a major part of the epithalamus. (12 Dec 1998)