Ep`i*chor"dal\, a. [Pref. epi- + chordal.] (Anat.) 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.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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