SINCE 1828
tractus solitarius
noun
tractus sol·i·ta·ri·us
| \ -ˌsäl-i-ˈtar-ē-əs
\
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Medical Definition of tractus solitarius
: a descending tract of nerve fibers that is situated near the dorsal surface of the medulla oblongata, mediates especially the sense of taste, and includes fibers from the facial, glossopharyngeal, and vagus nerves
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