Lewis & Short

phĭlŏlŏgĭa, ae, f., = φιλολογία.

  1. I. In gen., love of learning or letters, literary pursuits, the study of polite literature (class.): ne et opera et oleum philologiae nostrae perierit, Cic. Att. 2, 17, 1; Vitr. 7 praef. § 4: Homerus philologiae omnis dux, id. ib.
  2. II. In partic., explanation, interpretation of the writings of others, philology (post-Aug.): quae philosophia fuit, facta est philologia, Sen. Ep. 108, 24.