Word Study
Epichordal
CIDE DICTIONARY
Epichordal, a. [Pref. epi- + chordal.].
Upon or above the notochord; -- applied esp. to a vertebral column which develops upon the dorsal side of the notochord, as distinguished from a perichordal column, which develops around it. [1913 Webster]
For further exploring for "Epichordal" in Webster Dictionary Online