Definition of torus
toriplay \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
Since the magnetic field doesn't have the same strength across the cross-section of the torus, particle drift to the outside is much more energetically favorable.
In the most recent image, a pair of searchlight beams blast from each end of the dusty torus around the central star.
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
First Known Use: 1563See Words from the same year
Medical Definition of torus
tori\ˈtō(ə)r-ˌī, ˈtȯ(ə)r-, -ˌē\play play
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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