The word "antroscope" is a rare term used to describe a type of optical instrument used for inspecting the interior of small, inaccessible spaces. Sometimes spelled as "antrascope," the word follows the common morpheme "-scope," indicating a viewing device. The pronunciation is /æntrəskoʊp/ where the stress falls on the second syllable ("-tro-"). While not a commonly used term, it remains an intriguing word with roots in the Greek "anterior" and "skopein," meaning "to view."
An instrument to aid in the ocular examination of any cavity; specifically, an electric-light bulb for transillumination of the antrum of High-more to determine the presence or absence of an accumulation of fluid or a tumor in that cavity.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.