2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Reptilia  \Rep*til"i*a\  (r?p-t?l"?-?),  n.pl.  [NL.]  (Zo["o]l.) 
  A  class  of  air-breathing  oviparous  vertebrates,  usually 
  covered  with  scales  or  bony  plates.  The  heart  generally  has 
  two  auricles  and  one  ventricle.  The  development  of  the  young 
  is  the  same  as  that  of  birds. 
 
  Note:  It  is  nearly  related  in  many  respects  to  Aves,  or 
  birds.  The  principal  existing  orders  are  Testidunata  or 
  Chelonia  (turtles),  Crocodilia,  Lacertilla  (lizards), 
  Ophidia  (serpents),  and  Rhynchocephala;  the  chief 
  extinct  orders  are  Dinosauria,  Theremorpha,  Mosasauria, 
  Pterosauria,  Plesiosauria,  Ichtyosauria. 
 
  From  WordNet  r  1.6  [wn]: 
 
  Reptilia 
  n  :  class  of  cold-blooded  air-breathing  vertebrates  with 
  completely  ossified  skeleton  and  a  body  usually  covered 
  with  scales  or  horny  plates;  once  the  dominant  land 
  animals  [syn:  {Reptilia},  {class  Reptilia}] 

browse words by letter
a b c d e f g h i j k l m n o p q r s t u v w x y z
or search   thesauri dictionary search words