ichthyornis 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.
any of a genus (Ichthyornis) of prehistoric extinct birds, somewhat like a gull
Origin: Modern Latin ; from ichthyo- plush Classical Greek ornis, bird
ichthyornis definition by American Heritage Dictionary
Any of various extinct, toothed birds of the genus Ichthyornis that existed during the Cretaceous Period.
Origin: New Latin Ichthyornīs, genus name : ichthy(o)- + Greek ornīs, bird; see or- in Indo-European roots.