MICROCEPHALY Meaning of MICROCEPHALY in English [ ˌmʌɪkrəʊ'sɛfəli , -'kɛfəli ]■ noun Medicine abnormal smallness of the head.Derivativesmicrocephalic adjective &nounmicrocephalous adjective Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004