The noun NINJA has 2 senses: 1. a member of the ninja who were trained in martial arts and hired for espionage or sabotage or assassinations; a person skilled in ninjutsu. 2. a class of 14th century Japanese who were trained in martial arts and were hired for espionage and assassinations.
zygoma (zÄ«gÅÂ´mÉ), n 1. a long, slender process of the temporal bone, arising from the lower part of the squamous portion of the temporal bone and passing forward horizontally to join with the malar or zygomatic bone. 2. the zygomatic or malar bone that forms the prominence of the cheek.
The zygoma has 4 bony attachments to the skull, and ZMC fractures are sometimes known as tetrapod fractures. Trauma to the ZMC can result in multiple fractures (ie, tetrapod), but solitary bony disruption may occur, as with isolated zygomatic arch fracture. This article focuses on the zygomatic arch fracture.