The word "oothecauxe" is a rare term used in entomology to refer to the egg case of a mantis or cockroach. Despite its perplexing spelling, the pronunciation can be broken down using IPA phonetic transcription as /oʊθɪ'kɔks/. This indicates that the first syllable is pronounced like "oh" and the second syllable sounds like "thick". The word ends with a French-sounding "auxe". The complex spelling of "oothecauxe" reflects the intricate nature of the subject it pertains to - the minute details of insect biology.
Hypertrophy or enlargement of the ovary.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.