undulate

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un·du·late

(ŭn'dū-lāt),
Having an irregular, wavy border; denoting the shape of a bacterial colony.
[Mod. L. undula, dim. of unda, wave]
Farlex Partner Medical Dictionary © Farlex 2012

un·du·late

(ŭn'dyū-lăt)
Having an irregular, wavy border; denoting the shape of a bacterial colony.
[Mod. L. undula, dim. of unda, wave]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

undulate

(of plant leaves) with up-and-down wavy edges.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Simplified 3D Model of the gear (100:1) between the propeller and the undulator.
Table 2 summarizes design examples for high-repetition rate, high-average power laser, such as the coherent combining fiber-based chirped pulse amplification (CPA) laser, (83) driven laser plasma accelerator-based kW-level FEL EUV radiation source at 13.5 nm (Case A) (84) and 6.7 nm (Case B) wavelengths using the undulator with the period of 15 mm and the gap of 3 mm, assuming a FWHM electron bunch duration of ~10fs, a relative energy spread of [DELTA]E/[E.sub.b] ~ 1%.
When the Advanced Photon Source is completed in 1995 it will have 35 undulators, each much more powerful than the experimental model at Cornell.
How it works: An electron beam colliding with a laser beam produces the same effect as an undulator in a conventional synchrotron, but reduces the physical size of the device by a factor of 200.
The undulator does the same thing, except that the periodic array of sharp bends is arranged so that light from each bend adds in phase, giving an enormous boost in brightness.