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Definition of "frustum" [‖Frus•tum]

  • 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "frustum" in a sentence
  • ""The arrival of the frustum is a significant milestone."
  • "The frustum never had room for 6 crew, it was just an illusion put forth so the program would get support,"
  • "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.!"