Hemicraniosis (/hɛmɪkrənaɪˈoʊsɪs/) is a medical term that refers to a severe headache affecting only one side of the head. The word enters English from the Greek "hemi" meaning "half," "crani," for "skull," and "-osis," to denote a pathological or abnormal condition. The spelling of "hemicraniosis" follows the standard English phonetic principles, and the pronunciation reflects the stress pattern and the emphasis on the correct syllables. This word is commonly used in medical contexts to describe a type of migraine, and its spelling is essential for accurate diagnosis and treatment.
Enlargement of one side of the cranium.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.