土佐 とさ Meanings Noun Tosa (former province located in present-day Kochi Prefecture) Kanji 土 soil. Read as ト. 佐 assist. Read as サ. Words containing 土佐 土佐派 (とさは) Tosa school of Japanese painting (Muromachi-late Edo period) 土佐日記 (とさにっき) Tosa Diary (935CE) 土佐弁 (とさべん) Tosa dialect And 4 more. Word lists Core 5000 Spoken Jinuma: Japanese Dictionary · Word lists