In Ptolemy's Geography, two people are mentioned by the name of Thamyditai
(6.7.4, pg 402 of this book) and Oaditae
(6.7.21, pg 406 of this book)
Here's the scanned mention of Thamyditai
Here's the scanned mention of Oaditae
My question is, since -tai
seems to be common to both, what does it signify?
Edit: The original names of these two people in their native tongues are Thamud and 'Aad