训诂学

训诂学	xùn gǔ xué	study of classic texts, including interpretation, glossaries and commentaries
训	xùn	to teach; to train; to admonish / (bound form) instruction (from superiors); teachings; rule
训诂	xùn gǔ	to interpret and make glossaries and commentaries on classic texts
诂	gǔ	to comment / to explain
学	xué	to learn / to study / to imitate / science / -ology