The spelling of the word "hypocelom" may be confusing to those unfamiliar with its origins. The word is derived from the Greek words "hypo" meaning "under" and "kelom" meaning "cavity." In IPA phonetic transcription, the word is pronounced /haɪpəˈseləm/. The "hyp" is pronounced like "hihp," the "o" is pronounced like "uh," and the "celom" is pronounced like "sel-uhm." With practice, the spelling and pronunciation of "hypocelom" can become easier to remember.
Hypocaelom.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.