The word "statuvolence" is not a commonly used word, but it can be found in some medical or psychological texts. IPA phonetic transcription spells it as /stætjʊvələns/, breaking it down into syllables: sta-tu-vo-lence. The first syllable is pronounced like "sta" in "star", the second syllable as "tu" in "tutor", the third syllable as "vo" in "vote", and the last syllable as "lence" like "lens". This word refers to the tendency of a person to remain motionless or immobile.
Self-induced hypnotism.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.