acephalus
/(ˌ)eɪˈsɛfələs/ /(ˌ)eɪˈsɛf(ə)ləs/ /(ˌ)eɪˈkɛfələs/Medicine
noun
A fetus affected with acephaly.
Origin
Early 19th century; earliest use found in London Literary Gazette. From scientific Latin acephalus (of a fetus) headless, specific use of classical Latin acephalus.