from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several large pterosaurs of the genus Pteranodon of the Cretaceous Period, having a long pointed head, a scooplike beak, no teeth, and a wingspan upwards of 6 meters (20 feet).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A large pterosaur; males had a bony crest on the back of the head.
from the GNU version of the Collaborative International Dictionary of English
- n. A genus of American Cretaceous pterodactyls destitute of teeth. Several species are known, some of which had an expanse of wings of twenty feet or more.
from The Century Dictionary and Cyclopedia
- n. The typical genus of Pteranodontidæ.
New Latin Pteranodōn, genus name : Greek pteron, wing; see -pter + Greek a-, an-, without; see a-1 + Greek -odōn, -odon.(American Heritage® Dictionary of the English Language, Fourth Edition)