The word "oothecocyatosis" may seem daunting to spell, but its pronunciation can be broken down by its IPA phonetic transcription. The first syllable starts with "u," followed by a "th" sound and a long "e." The second syllable starts with "k," followed by an "oh" sound and a "k" sound. The last two syllables can be pronounced as "eye-toe-sis" or "ee-toe-sis," depending on the speaker's dialect. Despite its complex spelling, "oothecoyctosis" simply refers to the accumulation of egg cases in an animal's reproductive system.
The formation of a cyst of the ovary.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.