Thecodont \The"co*dont\, a. [Gr. ? a case + ?, ?, a tooth.]1. (Anat.) Having the teeth inserted in sockets in the alveoli of the jaws.
2. (Paleon.) Of or pertaining to the thecodonts.
Source: Webster's Revised Unabridged Dictionary (1913)
Thecodont \The"co*dont\, n. (Paleon.) One of the Thecodontia.