torus

play
noun to·rus \ ˈtȯr-əs \

Definition of torus

plural tori play \ˈtȯr-ˌī, -ˌē\
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 (such as a bony ridge on the skull)

Recent Examples of torus from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'torus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of torus

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


Medical Dictionary

torus

play
noun to·rus \ ˈtōr-əs, ˈtȯr- \

medical Definition of torus

plural tori play \ˈtō(ə)r-ˌī, ˈtȯ(ə)r-, -ˌē\
1 :a doughnut-shaped surface generated by a circle rotated about an axis in its plane that does not intersect the circle
2 :a smooth rounded anatomical protuberance (as a bony ridge on the skull)
  • a supraorbital torus

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