Etymology Borrowed from Latin tori (“nominative/vocative plural of torus”).
1
plural of torus
2
A protective, epidermal thickening derived from the stratum corneum and found in high friction areas (such as the foot sole of a dog).
While there is a hereditary component to tori, this does not explain all cases. Tori tend to appear more frequently during middle age of life; the torus palatinus is more commonly observed in females, but this is not the case with the torus mandibularis.2010 March, Andrés S. García-García, José-María Martínez-González, Rafael Gómez-Font, Ángeles Soto-Rivadeneira, Lucia Oviedo-Roldán, “Current status of the torus palatinus and torus mandibularis”, in Oral Surgery, volume 15, number 2, page 353:
tori
noun
Etymology Borrowed from Japanese 取り, from 取る (toru, “take, pick up”).