torus

to·rus

noun \ˈtȯr-əs\

plural to·ri\ˈtȯr-ˌī, -ˌē\

Definition of TORUS

1

: a large molding of convex profile commonly occurring as the lowest molding in the base of a column

2

: the thickening of a membrane closing a wood-cell pit (as of gymnosperm tracheids) having the secondary cell wall arched over the pit cavity

3

: a doughnut-shaped surface generated by a circle rotated about an axis in its plane that does not intersect the circle; broadly : toroid

4

: a smooth rounded anatomical protuberance (as a bony ridge on the skull)

Origin of TORUS

New Latin, from Latin, protuberance, bulge, torus molding

First Known Use: 1563

Rhymes with TORUS

chorus, Doris, Horace, Horus, loris, Maurice, morris, orris, porous, sorus