noun
go-on; Wu reading
Linguistic term for the Sino-Japanese reading of kanji based on 5th–6th century Chinese, often associated with Buddhist texts. Contrasts with 漢音 (kan-on) and 唐音 (tō-on).
See also: 漢音 (かんおん) · 唐音 (とうおん) · 呉 (ご)
「行」の呉音は「ぎょう」で、漢音は「こう」です。
The go-on reading of 行 is 'gyō', while the kan-on reading is 'kō'.
仏教用語には
Many Buddhist terms use go-on readings.