The word "atlodidymus" is a rare medical term used to describe a malformation of the testes where they are joined together. Its spelling can be explained through the International Phonetic Alphabet (IPA), which is a set of symbols used to represent sounds in spoken language. The word can be broken down into four syllables: at-lo-di-dy-mus. Each syllable has a different sound, as represented by the IPA symbols. The word is pronounced as /ætˌləʊˈdɪdɪməs/ with emphasis on the third syllable.
Atlantodidymus; a monster with two heads and but one neck.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.