• WordNet 3.6
    • n jaggedness something irregular like a bump or crack in a smooth surface
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Century Dictionary and Cyclopedia
    • n jaggedness The state of being jagged or denticulated; unevenness.
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In literature:

Secondly, the upper edge is jagged, and the outline of the jaggedness cuts clean and perfectly defined against the intense blue of the sky.
"The Heart of Nature" by Francis Younghusband
For boldness and jaggedness of skyline the Tetons thus seen from a distance of 40 miles have no rival anywhere.
"Grand Teton [Wyoming] National Park" by United States Dept. of the Interior

In science:

The relatively small number of galaxies available is responsible for the jaggedness in the contours.
Astrophysical Tests of Modified Gravity: Constraints from Distance Indicators in the Nearby Universe
Final Current Distribution The jaggedness of the numerical field profiles shown in Figure 11 clearly indicates that there are deviations from a simple locally-constant α profile.
Coronal heating by the partial relaxation of twisted loops