[ ahr-kee-op-tuh-riks ]
/ ˌɑr kiˈɒp tə rɪks /


a reptilelike fossil bird of the genus Archaeopteryx, from the late Jurassic Period, having teeth and a long, feathered, vertebrate tail.
Compare protoavis.

Origin of archaeopteryx

1855–60; < New Latin < Greek archaio- archaeo- + ptéryx wing Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for archaeopteryx

British Dictionary definitions for archaeopteryx


/ (ˌɑːkɪˈɒptərɪks) /


any of several extinct primitive birds constituting the genus Archaeopteryx, esp A. lithographica, which occurred in Jurassic times and had teeth, a long tail, well-developed wings, and a body covering of feathers

Word Origin for archaeopteryx

C19: from archaeo- + Greek pterux winged creature
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for archaeopteryx


[ är′kē-ŏptər-ĭks ]

An extinct primitive bird of the genus Archaeopteryx of the Jurassic Period, having characteristics of both birds and dinosaurs. Like dinosaurs, it had a long, bony tail, claws at the end of its fingers, and teeth. Like birds it had wings and feathers. Many scientists regard it as evidence that birds evolved from small carnivorous dinosaurs. See Note at bird.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.