from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various extinct primitive archosaurs of the order Thecodontia of the late Permian and Triassic periods, having teeth in sockets and probably ancestral to the dinosaurs.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the Thecodontia (a former group of archosaurs).
from the GNU version of the Collaborative International Dictionary of English
- adj. Having the teeth inserted in sockets in the alveoli of the jaws.
- adj. Of or pertaining to the thecodonts.
- n. One of the Thecodontia.
from The Century Dictionary and Cyclopedia
- Having the teeth lodged in alveoli: said of certain Lacertilia, as distinguished from those whose dentition is acrodont or pleurodont.
- n. A thecodont lizard.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. presumably in the common ancestral line to dinosaurs and crocodiles and birds
New Latin Thēcodontia, order name : Greek thēkē, chest, sheath; + Greek -odōn, -odont-, -odont.(American Heritage® Dictionary of the English Language, Fourth Edition)