ankyloglossia
noun
an·ky·lo·glos·sia
| \ ˌaŋ-kə-(ˌ)lō-ˈglä-sē-ə, -ˈglȯ-
\
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Medical Definition of ankyloglossia
: limited normal movement of the tongue chiefly due to an abnormally shortened frenulum : tongue-tie
Technically known as ankyloglossia, it is a usually minor birth defect in which a flap of tissue under the tongue, called the frenum or frenulum, is too short or absent.— C. Claiborne Ray, The New York Times, 26 Oct. 2004