Tortilla dough is called masa.
The traditional name for tortilla dough is masa and is what my Mexican neighbor always referred to tortilla dough as when she would make it.
I had a Mexican neighbor who made great tortillas and always invited me over for dinner as she loved to cook and was lonely.
She said that the dough that she made for her tortillas was called masa.
Tortillas are usually prepared from nixtamalized maize.
Kernels are then soaked in a solution of lime and water to which would remove their skins.
Then grains are treated in that way were then ground into maize to create masa dough.
You can buy tortillas already made or make your own tortillas.