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Pronunciation: di-frak'shun

Definition: Deflection of the rays of light from a straight line in passing by the edge of an opaque body or in passing an obstacle of about the size of the wavelength of the light.

[L. dif- fringo, pp. -fractus, to break in pieces]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.