diphycercal definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
designating, of, or having a tail fin in which the upper and lower lobes taper symmetrically to a point to which the spinal column extends
Origin: ; from Classical Greek diphyēs, twofold (; from di-, di- plush phyein, to bear, bring forth: see be) plush kerkos, tail plush -al
diphycercal definition by American Heritage Dictionary
Having or designating a tail fin in which the vertebral column extends to the tip, with symmetrical upper and lower parts.
Origin: Greek diphuēs, double; see diphyodont + kerkos, tail + -al1.
- diph·y·cerˈcy noun