məˈsēd.ə(r) noun
( -s )
Etymology: New Latin, from Greek masētēr, from masasthai to chew — more at mouth
: a large muscle that raises the lower jaw and assists in mastication and that arises from the zygomatic arch and the zygomatic process of the temporal bone and is inserted into the angle and ramus of the lower jaw
• mas·se·ter·ic |masə|terik adjective