Nosencephalus is a term used to describe a type of malformation in the brain. The word is pronounced as /nəʊsɛnˈsɛfələs/ and is spelled with "no-" prefix which means "not," "sense" root word which refers to "perception," and "-cephalus" suffix which means "head." The pronunciation of this word follows the English phonetic rules with the silent "o" in "no-" and stressed syllable on the second-to-the-last syllable. This word is commonly used in medical contexts as it refers to a serious condition that requires medical attention.
A monster with absence of skull in the frontal and temporal regions and a rudimentary brain.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.