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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. Mathematics The part of a solid, such as a cone or pyramid, between two parallel planes cutting the solid, especially the section between the base and a plane parallel to the base.

Century Dictionary and Cyclopedia

  1. n. A piece; particularly, a remaining piece of something of which a part is lacking, as the drum of a column.
  2. n. In geometry, the part of a solid next the base, left after cutting off the top part by a plane parallel to the base; or the part of any solid between two planes, which may be either parallel or inclined to each other: as, the frustum of a cone, of a pyramid, of a conoid, of a spheroid, or of a sphere. The frustum of a sphere is any part comprised between two parallel sections; and the middle frustum of a sphere is that whose ends are equal circles. In the figure the dotted line, c, indicates the part of the cone cut off to form the frustum. feminine

Wiktionary

  1. n. A cone or pyramid whose tip has been truncated by a plane parallel to its base.
  2. n. A region of a sphere delimited by two parallel planes.

GNU Webster's 1913

  1. n. (Geom.) The part of a solid next the base, formed by cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other.
  2. n. (Arch.) One of the drums of the shaft of a column.

WordNet 3.0

  1. n. a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed

Etymologies

  1. Latin frustum ("morsel"). (Wiktionary)
  2. Latin frūstum, piece broken off. (American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • “The arrival of the frustum is a significant milestone.”

    collectSPACE Today In Space History

  • “The frustum never had room for 6 crew, it was just an illusion put forth so the program would get support,”

    Orion Slims Down - NASA Watch

  • “Vibrations and failure to heed the warnings by the contractor resulted in the loss of the STS-4 (IIRC) boosters when the main parachute deck fitting separation explosive bolts inadvertantly fired prematurely when the linear shaped charge used to separate the frustum (nose cone) from the booster fired and generated vibes that the decelerometers sensed as water-impact ... at 10,000 ft.!”

    More Ares Woes - NASA Watch

  • “It appears to me, to make it safe NASA is working on take the Human out of the loop for Launch and Entry/Return at both ends being the earth and moon and spending billons on a frustum and rocket to get there and back.”

    A Shift in Policy? Moon Base Axed? - NASA Watch

  • “Smirking, ignorant W. with lipstick in reply to a comment from frustum”

    Associated Press: Pet Owners Prefer McCain To "Petless" Obama

  • “The forward assembly, composed of the forward skirt, forward skirt extension and the frustum, was moved Thursday from Kennedy's Assembly Refurbishment Facility, or ARF, to the Vehicle Assembly Building for stacking operations.”

    NASA Watch: Keith Cowing: June 2009 Archives

  • “Editor's note: Last week NASA decided to implement the so called "Option 2B Active Aft Skirt Reaction Mass Actuator RMA option" with "damping and isolation at the FS frustum/US region" in order to deal with the thrust oscillation problem with the current design of the Ares 1 launch vehicle.”

    NASA Watch: Keith Cowing: August 2008 Archives

  • “What I and apparently LaVey thought was a trapezohedron -- a polyhedron with trapezoids for sides -- is actually a frustum.”

    Kenneth Hite's Journal

  • “It's the world's four largest trapezoids, leaned up to make a frustum.”

    Kenneth Hite's Journal

  • “Si quis autem vitrum de hac arena factum in fossa reponeret, conuerteretur iterum in arenam, et qui imponeret frustum metalli, verteretur in vitrum: nonnulli reputant hanc fossam esse spiraculum maris arenosi, de quo mari aliquid locuturus sum in sequentibus.”

    The Voyages and Travels of Sir John Mandeville

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synonyms (1)

Words with the same meaning

  1. zone

same context (13)

Words that are found in similar contexts

  1. papilla
  2. fasciculus
  1. single-acting
  2. wagonload
  1. recuperator
  2. scarabaei
  1. penetrator
  2. klick
  1. globose
  2. smoking-jacket
  1. micrometers
  2. showpiece
  1. sarsenet

reverse dictionary (17)

Words that contain this word in their definition

  1. truncated cone
  2. truncated pyramid
  3. frusta
  1. gutta
  2. mantel
  3. miter-valve
  1. frust
  2. harness-cask
  3. cone-wheel
  1. cupel
  2. frustum
  3. shade
  1. bell-wheel
  2. cone-key
  3. cone-screw
  1. race
  2. velodrome

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‘frustum’ has been looked up 1989 times, loved by 2 people, added to 20 lists, and has a Scrabble score of 12.