Definition of epichordal in US English:

epichordal

adjective

  • 1Embryology. Situated or occurring dorsal to or adjacent to the notochord.

  • 2Zoology. Designating the upper (dorsal) lobe of the tail fin of a shark or certain other fishes; of or relating to such a lobe.

Origin

Late 19th century. From epi- + chordal.

Pronunciation

epichordal

/ˌɛpɪˈkɔːdl/