wiggles n.
[scientific computation] In solving partial differential
equations by finite difference and similar methods, wiggles are
sawtooth (up-down-up-down) oscillations at the shortest
wavelength representable on the grid. If an algorithm is
unstable, this is often the most unstable waveform, so it grows
to dominate the solution. Alternatively, stable (though
inaccurate) wiggles can be generated near a discontinuity by a
Gibbs phenomenon.
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WIMP environment n.
[acronym: `Window, Icon, Menu, Pointing device (or Pull-down
menu)'] A graphical-user-interface environment such as X or the Macintosh interface, esp. as described
by a hacker who prefers command-line interfaces for their
superior flexibility and extensibility. However, it is also used
without negative connotations; one must pay attention to voice
tone and other signals to interpret correctly. See menuitis, user-obsequious.