Definition of parachordal in US English:

parachordal

adjective

Embryology
  • Situated beside the notochord; specifically designating either of a pair of cartilaginous plates which form the foundation of the skull in mammalian embryos.

noun

Embryology
  • A parachordal cartilage.

Origin

Late 19th century; earliest use found in Thomas Huxley (1825–1895), biologist and science educationist. From para- + chord + -al.

Pronunciation

parachordal

/ˌparəˈkɔːdl/