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


  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Dinosauria  \Di`no*sau"ri*a\,  n.  pl  [NL.,  fr  Gr  ?  terrible  +  ? 
  lizard.]  (Paleon.) 
  An  order  of  extinct  mesozoic  reptiles,  mostly  of  large  size 
  (whence  the  name).  Notwithstanding  their  size,  they  present 
  birdlike  characters  in  the  skeleton,  esp.  in  the  pelvis  and 
  hind  limbs.  Some  walked  on  their  three-toed  hind  feet,  thus 
  producing  the  large  ``bird  tracks,''  so-called,  of  mesozoic 
  sandstones;  others  were  five-toed  and  quadrupedal.  See 
  Illust.  of  {Compsognathus},  also  Illustration  of  Dinosaur  in