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Axis vs Conoid - What's the difference?

axis | conoid |

In geometry terms the difference between axis and conoid

is that axis is an imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry) while conoid is a solid formed by the revolution of a conic section about its axis.

As a proper noun Axis

is the alliance (in effect before and during World War II) of Germany, Italy, Japan, and several minor allied countries, which opposed the Allies.

As an adjective conoid is

shaped like a cone; conical.

axis

English

(wikipedia axis)

Etymology 1

From (etyl) .

Noun

(axes)
  • (geometry) An imaginary line around which an object spins (an axis of rotation) or is symmetrically arranged (an axis of symmetry).
  • * {{quote-magazine, date=2012-03
    • , author=(Henry Petroski) , title=Opening Doors , volume=100, issue=2, page=112-3 , magazine= citation , passage=A doorknob of whatever roundish shape is effectively a continuum of levers, with the axis of the latching mechanism—known as the spindle—being the fulcrum about which the turning takes place.}}
    The Earth rotates once a day on its axis .
  • (mathematics) A fixed one-dimensional figure, such as a line or arc, with an origin and orientation and such that its points are in one-to-one correspondence with a set of numbers; an axis forms part of the basis of a space or is used to position and locate data in a graph (a coordinate axis).
  • (anatomy) The second cervical vertebra of the spine.
  • (psychiatry) A form of classification and descriptions of mental disorders or disabilities used in manuals such as the DSM (Diagnostic and Statistical Manual of Mental Disorders)
    • Synonyms
    * (cervical vertebra) epistropheus
    Coordinate terms
    * (cervical vertebra) atlas
    Derived terms
    (terms derived from axis) * axis of evil * axis of rotation * axis of symmetry * coordinate axis * imaginary axis * major axis * minor axis * real axis * semi-major axis * semi-minor axis * x-axis * y-axis * z-axis
    Related terms
    * axial, axially * axile

    Etymology 2

    From (etyl), name of an Indian animal mentioned by the Roman senator .

    Noun

    (es)
  • Axis axis , a deer native to Asia.
    • Synonyms
    * (Axis axis) chital, cheetal, chital deer, spotted deer, axis deer
    See also
    * (Chital) * (Axis axis) English nouns with irregular plurals ----

    conoid

    English

    (wikipedia conoid)

    Adjective

    (en adjective)
  • Shaped like a cone; conical

    • Noun

    (en noun)
  • Anything shaped like a cone.
  • (geometry) A Catalan surface all of whose rulings intersect some fixed line.
  • (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.

    Hyponyms

    * (geometry) right conoid ⊃ hyperbolic paraboloid