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Con vs Frustum - What's the difference?

con | frustum |

As nouns the difference between con and frustum

is that con is cone while frustum is a cone or pyramid whose tip has been truncated by a plane parallel to its base.

con

English

Etymology 1

From (etyl) connen, from (etyl) . More at (l).

Verb

(conn)
  • (rare) To study, especially in order to gain knowledge of.
  • * Wordsworth
  • Fixedly did look / Upon the muddy waters which he conned / As if he had been reading in a book.
  • * Burke
  • I did not come into Parliament to con my lesson.
  • * 1963 , D'Arcy Niland, Dadda jumped over two elephants: short stories :
  • The hawk rested on a crag of the gorge and conned the terrain with a fierce and frowning eye.''
  • (rare, archaic) To know, understand, acknowledge.
  • * 1579 , , Iune:
  • Of Muses Hobbinol, I conne no skill
  • to conduct the movements of a ship at sea.
  • Etymology 2

    Abbreviation of (etyl) .

    Noun

    (en noun)
  • A disadvantage of something, especially when contrasted with its advantages (pros ).
  • pros and cons
    Synonyms
    * disadvantage
    Antonyms
    * pro

    Etymology 3

    Shortened from (convict).

    Noun

    (en noun)
  • (slang) A convicted criminal, a convict.
  • Etymology 4

    From (con trick), shortened from (confidence trick).

    Noun

    (en noun)
  • (slang) A fraud; something carried out with the intention of deceiving, usually for personal, often illegal, gain.
  • Synonyms
    * See also

    Verb

    (conn)
  • (slang) To trick or defraud, usually for personal gain.
  • Synonyms
    * (to be conned) be sold a pup

    Etymology 5

    From earlier (cond), from (etyl) conduen, from (etyl) conduire, from (etyl) .

    Verb

  • (nautical) To give the necessary orders to the helmsman to steer a ship in the required direction through a channel etc. (rather than steer a compass direction)
  • Noun

    (-)
  • (nautical) The navigational direction of a ship
  • Derived terms
    * conning tower * take the con

    Etymology 6

    or (conference).

    Noun

    (en noun)
  • An organized gathering such as a convention or conference.
  • See also

    * cone * mod cons

    frustum

    English

    (wikipedia frustum) (Spherical segment)

    Noun

    (en-noun)
  • A cone or pyramid whose tip has been truncated by a plane parallel to its base.
  • * 1742 , Colin MacLaurin, A Treatise of Fluxions , Volume 1, page 25,
  • In a parabolic conoid this difference vani?hes, the fru?tum' being always equal to a cylinder of the ?ame height upon the ?ection of the conoid that bi?ects the altitude of the ' fru?tum and is parallel to its ba?es.
  • * 1809', '''''Frustum'' , entry in William Nicholson, ''The British Encyclopedia , Volume 3, unnumbered page,
  • This theorem holds good for complete solids as well as frustums , whether right or oblique.
  • * 2006', Pawan Harish Nirnimesh, P. J. Narayanan, ''Culling an Object Hierarchy to a '''Frustum Hierarchy'', Prem Kalra, Shmuel Peleg (editors), ''Computer Vision, Graphics and Image Processing: 5th Indian Conference, ICVGIP 2006 , Springer, LNCS4338, page 252,
  • However, when there are multiple view frustums (as in a tiled display wall), visibility culling time becomes substantial and cannot be hidden by pipelining it with other stages of rendering.
  • * 2008 , R. Benjamin Davis, Techniques to Assess Acoustic-structure Interaction in Liquid Rocket Engines , page 122,
  • Here, the dynamics of the fluid-filled frusta' of cones are considered (see Figure 5.5). The ' frusta are clamped at their roots and free at their ends.
  • A portion of a sphere delimited by two parallel planes.
  • * 1840 , James Blundell, Observations on Some of the More Important Diseases of Women , page 131,
  • In some women it[the os uteri] is flat, in many more tuberose, and forming, as it were, a frustum of a sphere;.
  • * 2014 , John Bird, Engineering Mathematics , page 183,
  • Problem 22.' Determine the volume of a '''frustum''' of a sphere of diameter 49.74 cm if the diameter(sic) of the ends of the '''frustum''' are 24.0 and 40.0 cm, and the height of the ' frustum is 7.00 cm.

    Usage notes

    The misspelling frustrum is by incorrect analogy with frustrate, also of Latin origin. * (portion of a sphere) The portion of the surface of a sphere delimited by parallel planes (i.e., the curved surface of a frustum) may be called a zone; however, that term is also sometimes used as a synonym of frustum .

    Derived terms

    * frustum culling * view frustum * viewing frustum

    References

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