Pronunciation: [zˈa͡ɪd͡ʒən] (IPA) 
The word "zygion" is spelled with a "z" because it comes from the Greek word "zygon" which means "yoke". The "y" sound in Greek is represented by the letter "upsilon" (υ), which in turn is represented in English by the letter "u", not "y". This is why the English spelling of "zygion" is not "ygon" but "zygon" with a "z" instead. In IPA phonetic transcription, the word would be spelled /ˈzɪdʒiən/.
Zygion, also known as the zygomatic point or zygomatic process, refers to a specific anatomical structure of the skull. It is a bony prominence located on each side of the face that forms part of the cheekbone or zygomatic bone.
The zygion is a crucial landmark in craniofacial anatomy and is commonly used as a reference point in medical and anthropological studies. It serves as one of the points used in craniofacial measurements to evaluate the size and shape of the face. Specifically, it is used to determine the maximum head breadth, which is an important parameter for various diagnostic and surgical purposes.
The zygion is positioned at the lateral ends of the zygomatic arch, which spans between the temporal bone and the cheekbone. It forms a prominent projection where the arch diverges, contributing to the overall structure of the midface. The zygion serves as an attachment site for muscles involved in chewing, providing stability and facilitating the movements of the jaw.
From a medical perspective, examining the zygion is relevant in diagnosing and treating various conditions related to the facial skeleton. It can aid in evaluating facial trauma, skull fractures, and asymmetry, as well as assisting with reconstructive surgery planning or orthodontic treatments. Moreover, studying the zygion is significant in anthropology and forensic science, as it plays a role in analyzing human skeletal remains and determining the ancestry or sex of an individual based on craniofacial characteristics.
The point on the zygoma on either side, at the extremity of the zygomatic diameter.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "zygion" is derived from the ancient Greek word "ζύγιον" (zygion), which means "yoke" or "pair". In Greek, "zygos" refers to a yoke that connects two animals together, such as oxen, allowing them to work harmoniously as a pair. Over time, "zygion" came to be used metaphorically to describe various forms of connection or linkage, both literal and figurative.
