Definition of mylohyoid muscle in US English:

mylohyoid muscle

noun

Anatomy Zoology
  • A muscle that connects the mandible and the hyoid bone, and that is joined at a median raphe to its fellow of the opposite side to form a large part of the muscular floor of the mouth.

Origin

Mid 19th century; earliest use found in Erasmus Wilson (1809–1884), dermatologist and philanthropist.