cri du chat syndrome
/ˌkriː də ˈʃɑː ˌsɪndrəʊm/Medicine
noun
A rare congenital disorder resulting from deletion of part of the short arm of chromosome 5, characterized by microcephaly, facial abnormalities, severe mental retardation, and (in infants) a distinctive high-pitched mewing cry.
Origin
1960s; earliest use found in Cytogenetics. From French cri du chat + syndrome.