macroglossia

from WordNet (r) 3.0 (2006)
macroglossia
    n 1: a congenital disorder characterized by an abnormally large
         tongue; often seen in cases of Down's syndrome
    
from The Collaborative International Dictionary of English v.0.48
Macroglossia \Mac`ro*glos"si*a\, n. [NL. See {Macro-}, and
   {Glossa}.] (Med.)
   Enlargement or hypertrophy of the tongue.
   [1913 Webster]
    

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