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Pierre Ro·bin syndrome | \ ˌpyer-rȯ-ˈbaⁿ- 
\
\Medical Definition of Pierre Robin syndrome
: a congenital defect of the face characterized by micrognathia, abnormal smallness of the tongue, cleft palate, and absence of the gag reflex and sometimes accompanied by bilateral eye defects, glaucoma, or retinal detachment
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