The compound adjective 'teacher-centered' is a modern pedagogical term formed within English. It combines the agent noun 'teacher', with roots in the Old English verb 'tǣċan' (to show, instruct), and the noun 'center', derived via French and Latin from the Greek 'kéntron', meaning the fixed point around which a circle is drawn. The suffix '-ed' converts the noun phrase into an adjective. The term's logic is transparently metaphorical: it positions the instructor as the immovable focal point, the 'center', around which all educational activity revolves, contrasting with 'learner-centered' approaches.

Structure: teacher (instructor) + center (focus) + ed (adjective suffix) - teacher: Origin: Middle English 'techere', from Old English 'tǣċere' (one who shows, instructs). Role: Noun base, denoting the agent. - center: Origin: Middle English, from Old French 'centre', from Latin 'centrum', from Greek 'kéntron' (sharp point, stationary point of a compass). Role: Noun base, denoting the focal point. - ed: Origin: Old English '-ed', '-od', '-ad' (past participle ending). Role: Suffix forming participial adjectives.