Acephalostomin is a rare medical term that is quite difficult to spell due to its lengthy nature and complex construction. Its spelling can be deciphered using the International Phonetic Alphabet (IPA) system which highlights the pronunciation of words. In IPA, "a" is pronounced as "eɪ", "cepha" as "sɛfə", "lo" as "loʊ", "sto" as "stoʊ", and "min" as "mɪn". The word Acephalostomin refers to a parasitic infection found in animals resulting from different types of roundworms.
Absence of the greater part of the head with, however, the presence of a mouth-like opening at the upper extremity of the trunk or neck.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.