Try Our Apps


The Best Internet Slang


[ring-koh-suh-feyl-yuh n, -fey-lee-uh n] /ˌrɪŋ koʊ səˈfeɪl yən, -ˈfeɪ li ən/
belonging or pertaining to the Rhynchocephalia, an order of lizardlike reptiles that are extinct except for the tuatara.
a rhynchocephalian reptile.
Origin of rhynchocephalian
1865-70; < New Latin Rhynchocephali(a) name of the order (< Greek rhýncho(s) snout + New Latin -cephalia; see cephal-, -ia) + -an Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for rhynchocephalian
Historical Examples
  • In the rhynchocephalian Hyperodapedon they are drawn out into a strongly curved beak.

    The Vertebrate Skeleton Sidney H. Reynolds
British Dictionary definitions for rhynchocephalian


of, relating to, or belonging to the Rhyncocephalia, an order of lizard-like reptiles common in the Mesozoic era but today represented only by the tuatara
any reptile belonging to the order Rhyncocephalia
Word Origin
C19: from New Latin Rhynchocephalia, from Greek rhunkhos a snout + kephalē head
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
Cite This Source
rhynchocephalian in Science
Any of various mostly extinct lizardlike reptiles of the order Rhynchocephalia, whose only living representative is the tuatara (Sphenodon punctatus and S. guntheri). Rhynchocephalians have several primitive skeletal features, including two temporal arches on each side of the skull rather than one, and teeth attached to the edge of the jaw rather than set in sockets. Most rhynchocephalians died out by the end of the Jurassic Period.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for rhynchocephalian

Few English speakers likely know this word

Word Value for rhynchocephalian

Scrabble Words With Friends

Nearby words for rhynchocephalian