SINCE 1828
tuberculum impar
noun
tuberculum im·par
| \ -ˈim-ˌpär
\
\
Medical Definition of tuberculum impar
: an embryonic swelling that is situated in the midline of the floor of the pharynx between the ventral ends of the two sides of the mandibular arch and of the second branchial arch and that probably contributes to the formation of the anterior part of the tongue
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