sulcus terminalis
noun
sulcus ter·mi·na·lis
| \ -ˌtər-mə-ˈnā-ləs
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plural sulci terminales\ -ˌlēz
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Medical Definition of sulcus terminalis
1
: a V-shaped groove separating the anterior two thirds of the tongue from the posterior third and containing the circumvallate papillae
2
: a shallow groove on the outside of the right atrium of the heart