Where does “theta” come from?

theta (Italian) comes from Ancient Greek θῆτα, from Phoenician 𐤈‬.

theta (Italian): theta

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	θῆτα	theta, the name for the eighth letter Θ, θ of the...
2	Phoenician	𐤈‬	—

theta — Etymology, Origin & Word History | Etymology Explorer