conoid

From cone +‎ -oid.

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conoid (comparative more conoid, superlative most conoid)

1. Shaped like a cone; conical.
   • 1959 May, “Notes and News: Oxford Road Station, Manchester”, in Railway Magazine, page 359:

     The rebuilding of Oxford Road Station, Manchester […] is progressing steadily, and the conoid roof has recently been erected.

   • 2023 March 22, Philip Haigh, “Five configuration stages to boost Manchester rail capacity”, in RAIL, number 979, page 31:

     Historic England explained the listing: "The station's unique design employs a high level of sophistication and innovation through its use of conoid shells supported on a cruck-like frame, which not only create a dramatic aesthetic form, but endow the building with a light and spacious interior."

conoid (plural conoids)

1. Anything shaped like a cone.
   • 1959 May, “Notes and News: Oxford Road Station, Manchester”, in Railway Magazine, page 359:

     The concourse is roofed with three conoids, ranging in width from 97 ft. 3 in. maximum to 41 ft. 6 in. minimum.

2. (geometry) A Catalan surface all of whose rulings intersect some fixed line
3. (geometry) A solid formed by the revolution of a conic section about its axis

   A parabolic conoid is a paraboloid; an elliptic conoid is an ellipsoid.

4. (anatomy) The pineal gland

• (geometry): right conoid ⊃ hyperbolic paraboloid

• oncoid

Borrowed from French conoïde.

conoid n (plural conoizi)

1. conoid