mandibuloacral dysplasia UK /manˈdɪb.jʊl.əʊˌæ.krəl dɪsˈpleɪ.ʒə/US /mænˈdɪb.jʊl.oʊˌæ.krəl dɪsˈpleɪ.ʒə/ noun1 •a rare autosomal genetic condition characterized by hypoplasia of the lower jaw