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单词 discontinuity
释义

discontinuity

[ dis-kon-tn-oo-i-tee, -yoo- ]
/ ˌdɪs kɒn tnˈu ɪ ti, -ˈyu- /
SEE SYNONYMS FOR discontinuity ON THESAURUS.COM

noun, plural dis·con·ti·nu·i·ties.

lack of continuity; irregularity: The plot of the book was marred by discontinuity.
a break or gap: The surface of the moon is characterized by major discontinuities.
Mathematics. a point at which a function is not continuous.
Geology. a zone deep within the earth where the velocity of earthquake waves changes radically.

Origin of discontinuity

From the Medieval Latin word discontinuitās, dating back to 1560–70. See discontinuous, -ity

Words nearby discontinuity

discontented, discontinuance, discontinuation, discontinuation test, discontinue, discontinuity, discontinuous, discontinuous variation, discopathy, discophile, discoplacenta
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for discontinuity

British Dictionary definitions for discontinuity

discontinuity
/ (dɪsˌkɒntɪˈnjuːɪtɪ) /

noun plural -ties

lack of rational connection or cohesion
a break or interruption
maths
  1. the property of being discontinuous
  2. the point or the value of the variable at which a curve or function becomes discontinuous
geology
  1. a zone within the earth where a sudden change in physical properties, such as the velocity of earthquake waves, occurs. Such a zone marks the boundary between the different layers of the earth, as between the core and mantleSee also Mohorovičić discontinuity
  2. a surface separating rocks that are not continuous with each other
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for discontinuity

discontinuity
[ dĭs-kŏn′tə-nōōĭ-tē ]

A usually uneven surface between two layers of rock or sediment that represents either an interruption in the deposition of the layers, as in an unconformity, or a displacement of one or both layers relative to each other, as in a fault.
A surface within the Earth across which the velocities of seismic waves change. The discontinuities are located at the boundaries between the Earth's various layers and correspond to changes in the elastic properties of the Earth's materials.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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