noun
A branch of theology concerned with the rational defense of religious doctrine. Used primarily in Christian contexts.
彼は神学校で弁証学を専攻した。
He majored in apologetics at the seminary.
神学 is the broader study of theology, while 弁証学 specifically refers to the defense of faith through reasoned arguments.
Composed of 弁 (explain, discern), 証 (evidence, proof), and 学 (study). The term is a direct translation of the Western concept of apologetics, likely coined in the context of Christian theology in Japan.