torus
UK /ˈtɔː.ɹəs/ · US /toʊ̯ɹəs/ noun
Forms tori toruses
- noun (topology) A topological space which is a product of two circles. “A 4-variable Karnaugh map can be thought of, topologically, as being a torus.”
- noun (topology, in combination, n-torus, 4-torus, etc.) The product of the specified number of circles.
- noun A ring-shaped object, especially a large ring-shaped chamber used in physical research.
- noun (architecture) A large convex molding, typically semicircular in cross section, which commonly projects at the base of a column and above the plinth.
- noun (anatomy) A rounded ridge of bone or muscle, especially one on the occipital bone.
- noun (botany) The end of the peduncle or flower stalk to which the floral parts (or in the Asteraceae, the florets of a flower head) are attached.
- noun (botany) The thickening of a membrane closing a wood-cell pit (as of gymnosperm tracheids) having the secondary cell wall arched over the pit cavity.
Synonyms
Etymology
Borrowed from Latin torus (“a round, swelling, elevation, protuberance”).
Webster’s 1913
- noun A lage molding used in the bases of columns. Its profile is semicircular. See Illust. of Molding. Brande&C.
- noun One of the ventral parapodia of tubicolous annelids. It usually has the form of an oblong thickening or elevation of the integument with rows of uncini or hooks along the center. See Illust. under Tubicolæ.
Etymology [L., a round, swelling, or bulging place, an elevation. Cf. 3d Tore.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “torus”, CC BY-SA 4.0. Details