conoid
/'kounɔid/
Học thuậtThân thiện
Definition
- Noun:
- A solid geometric shape: A three-dimensional shape that has a circular base and smoothly curved sides that taper uniformly to a single point at the top (apex). It is similar to a cone but may refer more broadly to conical shapes or surfaces in mathematical contexts.
Examples of Usage
- Noun:
- The architect designed a tower with a conoid roof, creating a striking silhouette against the sky.
- In geometry class, we learned to calculate the volume of a conoid.
- The natural formation resembled a perfect conoid, narrowing to a sharp peak.
Advanced Usage
- Mathematical Context: In mathematics and engineering, "conoid" can specifically refer to a type of ruled surface, where every point lies on a straight line (generatrix) that also lies on the surface. A "right conoid" is a surface where all these generating lines are parallel to a given plane and intersect a fixed line (the axis).
- The student's thesis involved modeling the stress on a parabolic conoid.
Variants and Related Words
- Conoidal (adj): Having the shape of or relating to a conoid.
- The conoidal structure was both elegant and strong.
- Cone (n): A more common term for a solid or hollow object which tapers from a circular base to a point. A conoid is a type of cone.
- Conic Section (n): A curve obtained from the intersection of a plane with a cone.
Synonyms
- Cone: A shape with a circular base tapering to a vertex.
- Tapering solid: A general description for a three-dimensional shape that narrows to a point.
Related Phrases
- Conoid of revolution: A surface generated by rotating a conic section (like a parabola or hyperbola) around its axis.
- The satellite dish was shaped like a conoid of revolution to focus signals.
Related Idioms
(There are no common idioms specifically using the word "conoid". It is a technical term.)
Noun
- a shape whose base is a circle and whose sides taper up to a point