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)
Examples of torus in a Sentence
Recent Examples on the Web
One [Gardner puzzle book] had a picture on the cover of what mathematicians call a torus, the shape of a doughnut or a bagel.
—
Sarah Lewin Frasier, Scientific American, 29 Oct. 2024
Each chip is connected to six other chips, and the whole system is connected in the shape of a torus to ensure all connecting wires are equally short.
—IEEE Spectrum, 8 May 2024
Webb’s instruments were able to tell that most of the droplets of water from the vapor Enceladus regularly spews out don’t stay within the torus near the moon.
—Elizabeth Rayne, Ars Technica, 13 June 2023
Billiard trajectories on the table correspond to trajectories on the torus, and vice versa.
—Quanta Magazine, 15 Feb. 2024
See all Example Sentences for torus 
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Sarah Lewin Frasier, Scientific American, 29 Oct. 2024
Each chip is connected to six other chips, and the whole system is connected in the shape of a torus to ensure all connecting wires are equally short.
—IEEE Spectrum, 8 May 2024
Webb’s instruments were able to tell that most of the droplets of water from the vapor Enceladus regularly spews out don’t stay within the torus near the moon.
—Elizabeth Rayne, Ars Technica, 13 June 2023
Billiard trajectories on the table correspond to trajectories on the torus, and vice versa.
—Quanta Magazine, 15 Feb. 2024
See all Example Sentences for torus
Dictionary Entries Near torus
Cite this Entry
“Torus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/torus. Accessed 28 Nov. 2024.
Copy CitationMedical Definition
torus
noun
to·rus
ˈtōr-əs, ˈtȯr- 
plural tori
ˈtō(ə)r-ˌī
ˈtȯ(ə)r-
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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