What is the Latin term for teacher?

The term "Grammaticus" refers specifically to a teacher, particularly one involved in language instruction, such as grammar and literature. In the context of ancient Roman education, a grammaticus would typically teach students the intricacies of Latin and possibly Greek, focusing on literary texts and grammar.

While "magister" does also mean teacher but can refer more generally to anyone in a teaching capacity, "grammaticus" emphasizes instruction in the arts of language, which aligns closely with the role of a teacher in a classical education setting.

"Philosophus" pertains to a philosopher, someone who studies philosophy, and does not specifically denote a teaching role, although they could also engage in teaching. "Doctor" often refers to a doctor or teacher in more advanced studies, but it is less specific than "grammaticus" in the context of language education. Thus, "grammaticus" is the most precise term for a teacher in this context, especially in ancient Roman education.